SomaSimple Discussion Lists  

Go Back   SomaSimple Discussion Lists > Physiotherapy / Physical Therapy / Manual Therapy / Bodywork > Neuro? Logical!
Albums Quiz PubMed Gray's Anatomy Tags Online Journals Statistics

Notices

Neuro? Logical! Forum for all neuro-things => from neuron to brain...

Reply
 
Thread Tools Display Modes
Old 15-06-2014, 10:58 PM   #1
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default Future brain controlled technology

Future brain controlled technology

I thought of starting a thread where debate is not necessary and discussion is welcome, e.g. contribution of thoughts on this matter or bring up new stuff we haven't heard about.

Here's an article on: A Brain controlled "ironman" suit

World Cup robo-suit team dismiss underwhelmed critics
It's about the paraplegic man who kicked off the world cup in a robo-suit

article link

It is done like this:
Quote:
Brain Computer Interfaces…Controlling With Your thoughts

BCI, or what is commonly known as Brain-Computer Interface is an emerging group of technologies which can also be presented as brain-machine interfaces (BMI), or mind-machine interfaces (MMI). In the recently published book of research, Introduction to Neural Engineering for Motor Rehabilitation (2013) by Dario Farina, Winnie Jensen and Metin Akay, the summary on the chapter covering BCI’s provides an excellent definition of BCI’s and the current applications they are being used in.

“A BCI monitors the user’s brain activity, extracts specific features from the brain signals that reflect the intent of the subject, and translates them into action. BCI Technology offers a natural way to augment human capabilities by providing a new interaction link with the outside world and, thus it is particularly relevant as an aid for patients with severe neuromuscular disabilities.” (Millan, p. 237).
from this site
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 15-06-2014, 11:05 PM   #2
Boigle
Layman Village Explainer
 
Boigle's Avatar
 
Join Date: Mar 2013
Location: Oregon
Age: 30
Posts: 192
Default

Seeing the little movements of the person controlling the robots is pretty intriguing.

Are these programmed by monitoring a person think, for example, "Move Up", recording the brain activity, then programming the robot to respond to that sort of activity?
__________________
**WARNING**
I am not smart.

_..~~///Eat protein. Protein is your mortal soul in unit skillfulness\\\~~.._
Boigle is offline   Reply With Quote
Old 15-06-2014, 11:25 PM   #3
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Hi, I understand it sofar as: an interface is programmed to translate real time EEG alike information of which they suspect (my guess) it's representing thought of movement.

The world cup intro was not received well coz it didn't show much, but this part of controlling a robo-suit is quite challenging.

What is being achieved already is this (you might have seen it)

World’s First Bionic, Mind-Controlled Leg Allows Amputee to Go for a Walk
It has a video in the link, (couldn't embed it)

http://techland.time.com/2013/12/26/...go-for-a-walk/

[YT]rSO2lRquu7Y[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking

Last edited by marcel; 16-06-2014 at 04:36 PM.
marcel is offline   Reply With Quote
Old 16-06-2014, 04:35 PM   #4
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Here's an older video of a "robo-suit" used by a paraplegic woman

[YT]2u2_hGEKljc[/YT]

Quote:
Design and evaluation of Mina: A robotic orthosis for paraplegics

Mobility options for persons suffering from paraplegia or paraparesis are limited to mainly wheeled devices. There are significant health, psychological, and social consequences related to being confined to a wheelchair. We present the Mina, a robotic orthosis for assisting mobility, which offers a legged mobility option for these persons. Mina is an overground robotic device that is worn on the back and around the legs to provide mobility assistance for people suffering from paraplegia or paraparesis. Mina uses compliant actuation to power the hip and knee joints. For paralyzed users, balance is provided with the assistance of forearm crutches. This paper presents the evaluation of Mina with two paraplegics (SCI ASIA-A). We confirmed that with a few hours of training and practice, Mina is currently able to provide paraplegics walking mobility at speeds of up to 0.20 m/s. We further confirmed that using Mina is not physically taxing and requires little cognitive effort, allowing the user to converse and maintain eye contact while walking.
This technology used for the benefit of people with disability fascinates me.

Other use that's being tested succesfully; flight control of an aircraft

[YT]VBniBJj_qwQ[/YT]

But what about this "RAT BRAIN FLIES PLANE"
Rat brain cells cultivated for computer chip that controls F22 flightsimulator.

[YT]pcAyd6LokWo[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 24-07-2015, 02:59 AM   #5
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Miguel Nicolelis: Brain-to-brain communication has arrived. How we did it

https://www.ted.com/talks/miguel_nic..._how_we_did_it

Quote:
You may remember neuroscientist Miguel Nicolelis — he built the brain-controlled exoskeleton that allowed a paralyzed man to kick the first ball of the 2014 World Cup. What’s he working on now? Building ways for two minds (rats and monkeys, for now) to send messages brain to brain. Watch to the end for an experiment that, as he says, will go to "the limit of your imagination."
I heard on Radio 4 this evening that he is hoping eventually to wire up stroke patients and physios.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 24-07-2015, 05:03 PM   #6
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Now if one could do this accuratly and save.

Quote:
Intraspinal Microstimulation to Restore Hand Function
http://www.movementlab.org/isms.html
Instead of an exoskeleton why not use microstimulation of the spinal cord, the idea has been around longer.
I know "if it only where that simple" ,....
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking

Last edited by marcel; 24-07-2015 at 05:06 PM.
marcel is offline   Reply With Quote
Old 26-07-2015, 12:47 PM   #7
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Effects of Lumbosacral Spinal Cord Epidural Stimulation for Standing after Chronic Complete Paralysis in Humans

http://journals.plos.org/plosone/art...l.pone.0133998

Abstract

Quote:
Sensory and motor complete spinal cord injury (SCI) has been considered functionally complete resulting in permanent paralysis with no recovery of voluntary movement, standing or walking. Previous findings demonstrated that lumbosacral spinal cord epidural stimulation can activate the spinal neural networks in one individual with motor complete, but sensory incomplete SCI, who achieved full body weight-bearing standing with independent knee extension, minimal self-assistance for balance and minimal external assistance for facilitating hip extension. In this study, we showed that two clinically sensory and motor complete participants were able to stand over-ground bearing full body-weight without any external assistance, using their hands to assist balance. The two clinically motor complete, but sensory incomplete participants also used minimal external assistance for hip extension. Standing with the least amount of assistance was achieved with individual-specific stimulation parameters, which promoted overall continuous EMG patterns in the lower limbs’ muscles. Stimulation parameters optimized for one individual resulted in poor standing and additional need of external assistance for hip and knee extension in the other participants. During sitting, little or negligible EMG activity of lower limb muscles was induced by epidural stimulation, showing that the weight-bearing related sensory information was needed to generate sufficient EMG patterns to effectively support full weight-bearing standing. In general, electrode configurations with cathodes selected in the caudal region of the array at relatively higher frequencies (25–60 Hz) resulted in the more effective EMG patterns for standing. These results show that human spinal circuitry can generate motor patterns effective for standing in the absence of functional supraspinal connections; however the appropriate selection of stimulation parameters is critical.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 26-07-2015, 04:52 PM   #8
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

coupling robot sensory info with humans (basic but,..)


[YT]watch?t=122&v=ZMF0p15GPYg[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 06-09-2015, 04:29 PM   #9
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default New Bionics Let Us Run, Climb and Dance | Hugh Herr | TED Talks

Pretty impressive results

[YT]watch?v=CDsNZJTWw0w[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 12-01-2016, 11:29 AM   #10
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Robotic glove helps patients restore hand movements

http://www.sciencedaily.com/releases...0111092604.htm
Quote:
Patients who have lost their hand functions due to injuries or nerve-related conditions, such as stroke and muscular dystrophy, now have a chance of restoring their hand movements by using a new lightweight and smart rehabilitation device called EsoGlove developed by a research team from the National University of Singapore (NUS).


Advanced Myoelectric Control for Robotic Hand-Assisted Training: Outcome from a Stroke Patient
http://journal.frontiersin.org/artic...017.00107/full

Quote:
A hand exoskeleton driven by myoelectric pattern recognition was designed for stroke rehabilitation. It detects and recognizes the user’s motion intent based on electromyography (EMG) signals, and then helps the user to accomplish hand motions in real time. The hand exoskeleton can perform six kinds of motions, including the whole hand closing/opening, tripod pinch/opening, and the “gun” sign/opening. A 52-year-old woman, 8 months after stroke, made 20× 2-h visits over 10 weeks to participate in robot-assisted hand training. Though she was unable to move her fingers on her right hand before the training, EMG activities could be detected on her right forearm. In each visit, she took 4× 10-min robot-assisted training sessions, in which she repeated the aforementioned six motion patterns assisted by our intent-driven hand exoskeleton. After the training, her grip force increased from 1.5 to 2.7 kg, her pinch force increased from 1.5 to 2.5 kg, her score of Box and Block test increased from 3 to 7, her score of Fugl–Meyer (Part C) increased from 0 to 7, and her hand function increased from Stage 1 to Stage 2 in Chedoke–McMaster assessment. The results demonstrate the feasibility of robot-assisted training driven by myoelectric pattern recognition after stroke.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi

Last edited by Jo Bowyer; 31-03-2017 at 01:15 AM.
Jo Bowyer is offline   Reply With Quote
Old 12-01-2016, 05:24 PM   #11
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Something alike, interesting the world of soft micro actuators

Just thought for other uses; perhaps instead of a exoskeloton future ones might be wearable with small actuators woven in.

http://www.nanowerk.com/news2/robotics/newsid=40320.php

[YT]2UoOzBORjDM[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 13-04-2016, 08:13 PM   #12
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Brain Implant Gives Paralyzed Man Functional Control of Arm

http://neurosciencenews.com/paralysi...-control-4044/

Device allows paralyzed man to swipe credit card and perform other movements.

Quote:
Six years ago, he was paralyzed in a diving accident. Today, he participates in clinical sessions during which he can grasp and swipe a credit card or play a guitar video game with his own fingers and hand. These complex functional movements are driven by his own thoughts and a prototype medical system that are detailed in a study published online today in the journal Nature.

The device, called NeuroLife, was invented at Battelle, which teamed with physicians and neuroscientists from The Ohio State University Wexner Medical Center to develop the research approach and perform the clinical study. Ohio State doctors identified the study participant and implanted a tiny computer chip into his brain.

That pioneering participant, Ian Burkhart, is a 24-year-old quadriplegic from Dublin, Ohio, and the first person to use this technology. This electronic neural bypass for spinal cord injuries reconnects the brain directly to muscles, allowing voluntary and functional control of a paralyzed limb by using his thoughts. The device interprets thoughts and brain signals then bypasses his injured spinal cord and connects directly to a sleeve that stimulates the muscles that control his arm and hand.

“We’re showing for the first time that a quadriplegic patient is able to improve his level of motor function and hand movements,” said Dr. Ali Rezai, a co-author of the study and a neurosurgeon at Ohio State’s Wexner Medical Center.

Burkhart first demonstrated the neural bypass technology in June 2014, when he was able to open and close his hand simply by thinking about it. Now, he can perform more sophisticated movements with his hands and fingers such as picking up a spoon or picking up and holding a phone to his ear — things he couldn’t do before and which can significantly improve his quality of life.


Classifying three imaginary states of the same upper extremity using time-domain features
http://journals.plos.org/plosone/art...l.pone.0174161

Abstract

Quote:
Brain-computer interface (BCI) allows collaboration between humans and machines. It translates the electrical activity of the brain to understandable commands to operate a machine or a device. In this study, we propose a method to improve the accuracy of a 3-class BCI using electroencephalographic (EEG) signals. This BCI discriminates rest against imaginary grasps and elbow movements of the same limb. This classification task is challenging because imaginary movements within the same limb have close spatial representations on the motor cortex area. The proposed method extracts time-domain features and classifies them using a support vector machine (SVM) with a radial basis kernel function (RBF). An average accuracy of 74.2% was obtained when using the proposed method on a dataset collected, prior to this study, from 12 healthy individuals. This accuracy was higher than that obtained when other widely used methods, such as common spatial patterns (CSP), filter bank CSP (FBCSP), and band power methods, were used on the same dataset. These results are encouraging and the proposed method could potentially be used in future applications including BCI-driven robotic devices, such as a portable exoskeleton for the arm, to assist individuals with impaired upper extremity functions in performing daily tasks.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi

Last edited by Jo Bowyer; 01-04-2017 at 09:48 AM.
Jo Bowyer is offline   Reply With Quote
Old 13-04-2016, 11:10 PM   #13
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Did you see the size of that plug (@ 1:11)

[YT]y5YRQnv-768?t=73[/YT]
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 13-04-2016, 11:49 PM   #14
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default

Cool! I'd go for it
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 07-09-2016, 11:43 AM   #15
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default The Importance of Visual Feedback Design in BCIs; from Embodiment to Motor Imagery Learning

http://journals.plos.org/plosone/art...l.pone.0161945

Abstract

Quote:
Brain computer interfaces (BCIs) have been developed and implemented in many areas as a new communication channel between the human brain and external devices. Despite their rapid growth and broad popularity, the inaccurate performance and cost of user-training are yet the main issues that prevent their application out of the research and clinical environment. We previously introduced a BCI system for the control of a very humanlike android that could raise a sense of embodiment and agency in the operators only by imagining a movement (motor imagery) and watching the robot perform it. Also using the same setup, we further discovered that the positive bias of subjects’ performance both increased their sensation of embodiment and improved their motor imagery skills in a short period. In this work, we studied the shared mechanism between the experience of embodiment and motor imagery. We compared the trend of motor imagery learning when two groups of subjects BCI-operated different looking robots, a very humanlike android’s hands and a pair of metallic gripper. Although our experiments did not show a significant change of learning between the two groups immediately during one session, the android group revealed better motor imagery skills in the follow up session when both groups repeated the task using the non-humanlike gripper. This result shows that motor imagery skills learnt during the BCI-operation of humanlike hands are more robust to time and visual feedback changes. We discuss the role of embodiment and mirror neuron system in such outcome and propose the application of androids for efficient BCI training.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 23-09-2016, 11:25 AM   #16
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Simulating Ideal Assistive Devices to Reduce the Metabolic Cost of Running

http://journals.plos.org/plosone/art...l.pone.0163417

Introduction

Quote:
Designing assistance for running vast distance is now quite a common pursuit, As reducing the power your muscles devour could markedly ease your commute. A current concern is how to discern what torque would be best at each joint—We use simulations to search for locations and patterns of torques to appoint. The pipeline we use could help someone to choose an assistive device to design, With the energy burned by each muscle concerned guiding how to revise and refine.

T. K. U.
Quote:
The human body has evolved over millions of years into a system that is efficient at bipedal locomotion [1] while remaining amazingly versatile. A consequence of this versatility is that the properties of our musculoskeletal system are not ideally suited for any single physical activity in which we engage. An analogous situation is readily apparent in penguins, which are expert swimmers but, despite their formal attire, move about rather inelegantly on land. Indeed, the waddling of penguins is both slower and more energetically expensive than the terrestrial locomotion observed in other bipedal birds [2]. Humans, though perhaps more adept at running than are penguins at walking, nevertheless have a morphology that also represents a compromise between different forms of locomotion [3] with different mechanical and energetic properties [4]. For example, efficient walking requires more compliant tendons than efficient running [5]. Cyclists shift gears to maintain a comfortable pedaling frequency (and, in turn, favorable muscle fiber velocities) as ground speed varies [6]. Because our muscles and tendons cannot instantaneously “shift gears” when we transition between gaits or change speed, their properties must represent a balance among competing demands in different movement scenarios. This compromise provides a possible explanation for why running economy is insensitive to speed [7], acceleration/deceleration cycles [8], and footstrike pattern [9].

There are many natural means by which the properties of our muscles and tendons can change. For example, muscle fibers decrease in strength and contraction speed as we age [10], and tendon compliance can be affected by strength training [11]. Although proper training can improve running efficiency over time, simply donning an assistive device would offer several advantages. First, training requires prolonged effort with changes occurring relatively slowly. Secondly, the dynamic properties of muscles and tendons are fundamentally limited by the physical properties of their constituent tissues; the dynamic properties of assistive devices are not bound by these biological constraints. Finally, our bodies will always compromise between competing demands, such as maximizing performance while retaining some amount of versatility in our movement. Assistive devices can overcome these challenges, allowing us to instantaneously modify the dynamics of our musculoskeletal system, temporarily sacrificing versatility to maximize performance at a specific task.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi

Last edited by Jo Bowyer; 07-10-2016 at 06:28 PM.
Jo Bowyer is offline   Reply With Quote
Old 07-10-2016, 06:24 PM   #17
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Democratizing Neurorehabilitation: How Accessible are Low-Cost Mobile-Gaming Technologies for Self-Rehabilitation of Arm Disability in Stroke?

http://journals.plos.org/plosone/art...l.pone.0163413

Abstract

Quote:
Motor-training software on tablets or smartphones (Apps) offer a low-cost, widely-available solution to supplement arm physiotherapy after stroke. We assessed the proportions of hemiplegic stroke patients who, with their plegic hand, could meaningfully engage with mobile-gaming devices using a range of standard control-methods, as well as by using a novel wireless grip-controller, adapted for neurodisability. We screened all newly-diagnosed hemiplegic stroke patients presenting to a stroke centre over 6 months. Subjects were compared on their ability to control a tablet or smartphone cursor using: finger-swipe, tap, joystick, screen-tilt, and an adapted handgrip. Cursor control was graded as: no movement (0); less than full-range movement (1); full-range movement (2); directed movement (3). In total, we screened 345 patients, of which 87 satisfied recruitment criteria and completed testing. The commonest reason for exclusion was cognitive impairment. Using conventional controls, the proportion of patients able to direct cursor movement was 38–48%; and to move it full-range was 55–67% (controller comparison: p>0.1). By comparison, handgrip enabled directed control in 75%, and full-range movement in 93% (controller comparison: p<0.001). This difference between controllers was most apparent amongst severely-disabled subjects, with 0% achieving directed or full-range control with conventional controls, compared to 58% and 83% achieving these two levels of movement, respectively, with handgrip. In conclusion, hand, or arm, training Apps played on conventional mobile devices are likely to be accessible only to mildly-disabled stroke patients. Technological adaptations such as grip-control can enable more severely affected subjects to engage with self-training software.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 14-10-2016, 02:42 PM   #18
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default In a first, brain computer interface helps paralyzed man feel again

https://www.sciencedaily.com/release...1013151356.htm

Quote:
In a study published online today in Science Translational Medicine, a team of experts led by Robert Gaunt, Ph.D., assistant professor of physical medicine and rehabilitation at Pitt, demonstrated for the first time ever in humans a technology that allows Mr. Copeland to experience the sensation of touch through a robotic arm that he controls with his brain.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 15-10-2016, 04:54 AM   #19
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default CYBATHLON Championship for Athletes with Disabilities

http://www.cybathlon.ethz.ch/en/

Quote:
The Cybathlon is a championship for racing pilots with disabilities using advanced assistive devices including robotic technologies.



__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 25-10-2016, 10:13 PM   #20
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Automatic Speech Recognition from Neural Signals: A Focused Review

http://journal.frontiersin.org/artic...016.00429/full

Quote:
Speech interfaces have become widely accepted and are nowadays integrated in various real-life applications and devices. They have become a part of our daily life. However, speech interfaces presume the ability to produce intelligible speech, which might be impossible due to either loud environments, bothering bystanders or incapabilities to produce speech (i.e., patients suffering from locked-in syndrome). For these reasons it would be highly desirable to not speak but to simply envision oneself to say words or sentences. Interfaces based on imagined speech would enable fast and natural communication without the need for audible speech and would give a voice to otherwise mute people.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 26-10-2016, 12:08 AM   #21
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

I was a bit worried about "Big Brother"

Quote:
A fear often associated with BCI in general and the speech decoding in Brain-to-text in particular is that private thoughts could be read and thereby freedom of thought not be guaranteed any longer. In Brain-to-text activations associated with the production of speech are decoded, from planning to articulate speech prior to voice onset, to control of facial muscles, to processing of heared sounds. Thought processes or internal voice, while being formulated in words as well, do not make use of areas associated with the movement of articulatory muscles. So even if neural prothesis based on imagined speech processes become a reality, there is still a large distinction between thought processes and the process of imagining oneself to speak.
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 10-11-2016, 01:53 AM   #22
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Researchers Restore Leg Movement in Primates Using Wireless Neural Interface

http://neurosciencenews.com/leg-move...nterface-5465/

Quote:
An international team of scientists has used a wireless “brain-spinal interface” to bypass spinal cord injuries in a pair of rhesus macaques, restoring intentional walking movement to a temporarily paralyzed leg. The researchers, who describe their work in the journal Nature, say this is the first time a neural prosthetic has been used to restore walking movement directly to the legs of nonhuman primates.
Quote:
The ability to transmit brain signals wirelessly was critical to this work, Borton said. Wired brain-sensing systems limit freedom of movement, which in turn limits the information researchers are able to gather about locomotion.

“Doing this wirelessly enables us to map the neural activity in normal contexts and during natural behavior,” Borton said. “If we truly aim for neuroprosthetics that can someday be deployed to help human patients during activities of daily life, such untethered recording technologies will be critical.”

The researchers combined their understanding of how brain signals influence locomotion with spinal maps, developed by Courtine’s lab at EPFL, which identified the neural hotspots in the spine responsible for locomotor control. That enabled the team to identify the neural circuits that should be stimulated by the spinal implant.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 17-12-2016, 09:16 PM   #23
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Controlling Robotic Arms With The Brain

http://neurosciencenews.com/neurobotics-brain-arm-5766/

Quote:
“This is the first time in the world that people can operate a robotic arm to reach and grasp objects in a complex 3D environment using only their thoughts without a brain implant,” said Bin He, a University of Minnesota biomedical engineering professor and lead researcher on the study. “Just by imagining moving their arms, they were able to move the robotic arm.”
my bold



I still think the plug is cool.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 29-12-2016, 09:54 PM   #24
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default The Pursuit of Chronically Reliable Neural Interfaces: A Materials Perspective

http://journal.frontiersin.org/artic...016.00599/full

Quote:
Brain–computer interfaces represent one of the most astonishing technologies in our era. However, the grand challenge of chronic instability and limited throughput of the electrode–tissue interface has significantly hindered the further development and ultimate deployment of such exciting technologies. A multidisciplinary research workforce has been called upon to respond to this engineering need. In this paper, I briefly review this multidisciplinary pursuit of chronically reliable neural interfaces from a materials perspective by analyzing the problem, abstracting the engineering principles, and summarizing the corresponding engineering strategies. I further draw my future perspectives by extending the proposed engineering principles.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 31-01-2017, 09:36 PM   #25
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Brain–Computer Interface–Based Communication in the Completely Locked-In State

http://journals.plos.org/plosbiology...l.pbio.1002593

Abstract

Quote:
Despite partial success, communication has remained impossible for persons suffering from complete motor paralysis but intact cognitive and emotional processing, a state called complete locked-in state (CLIS). Based on a motor learning theoretical context and on the failure of neuroelectric brain–computer interface (BCI) communication attempts in CLIS, we here report BCI communication using functional near-infrared spectroscopy (fNIRS) and an implicit attentional processing procedure. Four patients suffering from advanced amyotrophic lateral sclerosis (ALS)—two of them in permanent CLIS and two entering the CLIS without reliable means of communication—learned to answer personal questions with known answers and open questions all requiring a “yes” or “no” thought using frontocentral oxygenation changes measured with fNIRS. Three patients completed more than 46 sessions spread over several weeks, and one patient (patient W) completed 20 sessions. Online fNIRS classification of personal questions with known answers and open questions using linear support vector machine (SVM) resulted in an above-chance-level correct response rate over 70%. Electroencephalographic oscillations and electrooculographic signals did not exceed the chance-level threshold for correct communication despite occasional differences between the physiological signals representing a “yes” or “no” response. However, electroencephalogram (EEG) changes in the theta-frequency band correlated with inferior communication performance, probably because of decreased vigilance and attention. If replicated with ALS patients in CLIS, these positive results could indicate the first step towards abolition of complete locked-in states, at least for ALS.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 01-02-2017, 09:52 PM   #26
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Biomimetic temperature-sensing layer for artificial skins

http://robotics.sciencemag.org/conte.../eaai9251.full

Abstract

Quote:
Artificial membranes that are sensitive to temperature are needed in robotics to augment interactions with humans and the environment and in bioengineering to improve prosthetic limbs. Existing flexible sensors achieved sensitivities of <100 millikelvin and large responsivity, albeit within narrow (<5 kelvin) temperature ranges. Other flexible devices, working in wider temperature ranges, exhibit orders of magnitude poorer responses. However, much more versatile and temperature-sensitive membranes are present in animals such as pit vipers, whose pit membranes have the highest sensitivity and responsivity in nature and are used to locate warm-blooded prey at distance. We show that pectin films mimic the sensing mechanism of pit membranes and parallel their record performances. These films map temperature on surfaces with a sensitivity of at least 10 millikelvin in a wide temperature range (45 kelvin), have very high responsivity, and detect warm bodies at distance. The produced material can be integrated as a layer in artificial skin platforms and boost their temperature sensitivity to reach the best biological performance.
INTRODUCTION

Quote:
Artificial skins (1, 2) are essential to augment robotics (3) and improve prosthetic limbs (4). Existing platforms are designed to emulate properties of the human skin by incorporating sensitive functions (4–8) that respond to different external stimuli, for example, to variations of temperature (4, 8–10). Available artificial skins that sense temperature variations use either passive flexible resistors (8–11) or active electronic devices (4, 12). Their functionality is limited by the choice of temperature-sensitive materials incorporated in the electronics (2). For example, p-n junctions have small responsivity, require a complex architecture, and demand nontrivial fabrication procedures (4, 12). Flexible sensors made of monolayer-capped nanoparticles are, at the same time, as sensitive to temperature as they are to pressure and humidity, making it impossible to deconvolve the three variables in practical applications (8). Composites based on a polymer matrix and electrically conductive fillers operate in a too narrow temperature range and have two orders of magnitude uncertainty on the current value corresponding to the same temperature (9, 13). Substantial advances on artificial skins require the use of new flexible materials with higher temperature sensitivity, responsivity, range of operation, and stability.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Old 22-02-2017, 07:42 AM   #27
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Brain Computer Interface Advance Allows Fast and Accurate Typing By People With Paralysis

http://neurosciencenews.com/typing-paralysis-bci-6140/

Quote:
In a Stanford-led research report, three participants with movement impairment controlled an onscreen cursor simply by imagining their own hand movements.





Simulating tactile signals from the whole hand with millisecond precision

http://www.pnas.org/content/early/2017/06/20/1704856114

Significance

Quote:
When we grasp an object, thousands of tactile nerve fibers become activated and inform us about its physical properties (e.g., shape, size, and texture). Although the properties of individual fibers have been described, our understanding of how object information is encoded in populations of fibers remains primitive. To fill this gap, we have developed a simulation of tactile fibers that incorporates much of what is known about skin mechanics and tactile nerve fibers. We show that simulated fibers match biological ones across a wide range of conditions sampled from the literature. We then show how this simulation can reveal previously unknown ways in which populations of nerve fibers cooperate to convey sensory information and discuss the implications for bionic hands.
Abstract
Quote:
When we grasp and manipulate an object, populations of tactile nerve fibers become activated and convey information about the shape, size, and texture of the object and its motion across the skin. The response properties of tactile fibers have been extensively characterized in single-unit recordings, yielding important insights into how individual fibers encode tactile information. A recurring finding in this extensive body of work is that stimulus information is distributed over many fibers. However, our understanding of population-level representations remains primitive. To fill this gap, we have developed a model to simulate the responses of all tactile fibers innervating the glabrous skin of the hand to any spatiotemporal stimulus applied to the skin. The model first reconstructs the stresses experienced by mechanoreceptors when the skin is deformed and then simulates the spiking response that would be produced in the nerve fiber innervating that receptor. By simulating skin deformations across the palmar surface of the hand and tiling it with receptors at their known densities, we reconstruct the responses of entire populations of nerve fibers. We show that the simulated responses closely match their measured counterparts, down to the precise timing of the evoked spikes, across a wide variety of experimental conditions sampled from the literature. We then conduct three virtual experiments to illustrate how the simulation can provide powerful insights into population coding in touch. Finally, we discuss how the model provides a means to establish naturalistic artificial touch in bionic hands.
mechanoreceptor tactile afferent somatosensory periphery skin mechanics computational model

Update 27/06/2017
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi

Last edited by Jo Bowyer; 27-06-2017 at 12:24 PM.
Jo Bowyer is offline   Reply With Quote
Old 22-02-2017, 06:31 PM   #28
marcel
SomaSimpler
 
marcel's Avatar
 
Join Date: Feb 2006
Location: The Netherlands, Amsterdam
Posts: 1,182
Default

Quote:
Brain-robot training triggers 'surprise' improvement in paralysis
11 August 2016

Eight paraplegics are able to feel their legs again after training with brain-controlled robotics.

The one-year training program was supposed to teach patients how to walk inside a robotic exoskeleton. The regime included controlling the legs of a virtual avatar via a skull cap, and learning to manipulate the exoskeleton in the same way.

But scientists believe the treatment is reawakening the brain’s control over surviving nerves in the spine, offering hope to others who have suffered spinal cord injuries and strokes.

Sensations and muscle control reported by four patients after a year of training were so strong that their doctors upgraded their diagnoses from complete to partial paralysis.

Most patients said they had better bladder control and bowel function which meant they could cut back on laxatives and catheters.

"What we're showing in this paper is that patients who used a brain-machine interface for a long period of time experienced improvements in motor behaviour, tactile sensations and visceral functions below the level of the spinal cord injury.

"Until now, nobody has seen recovery of these functions in a patient so many years after being diagnosed with complete paralysis."
http://www.telegraph.co.uk/news/2016...-in-paralysis/
__________________
Marcel

"Evolution is a tinkerer not an engineer" F.Jacob
"Without imperfection neither you nor I would exist" Stephen Hawking
marcel is offline   Reply With Quote
Old 10-03-2017, 12:28 AM   #29
Jo Bowyer
ronin/matrix warrior
 
Jo Bowyer's Avatar
 
Join Date: Mar 2013
Location: Bedford UK
Age: 59
Posts: 6,438
Default Researchers Directly Observe Concepts in Human Brain

http://neurosciencenews.com/concepts...oscience-6225/

Quote:
“Most research into how the human brain processes semantic information uses noninvasive neuroimaging approaches like functional magnetic resonance imaging, which indirectly measures neural activity via changes in blood flow,” says Nathan Crone, a neurologist at Johns Hopkins Medicine and contributing author on the research. “Invasive alternatives like electrocorticography, or ECoG, can provide more direct observations of neural processing but can only be used in the rare clinical setting when implanting electrodes directly on the surface of the cortex is a clinical necessity, as in some cases of intractable epilepsy,” he explained.
__________________
Jo Bowyer
Chartered Physiotherapist Registered Osteopath.
"Out beyond ideas of wrongdoing and rightdoing,there is a field. I'll meet you there." Rumi
Jo Bowyer is offline   Reply With Quote
Reply

Bookmarks

Tags
brain, control, technology

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
VIS FMRI of the human brain in pain research studies and it's future implications. Jo Bowyer Neuro? Logical! 2 24-09-2013 04:37 PM
Technology in physiotherapy flaviovitor The Performance Lab 1 01-08-2009 02:53 PM
transparency and technology ian s The Wind Rose 1 24-03-2009 08:09 PM
High Technology bernard The Rubbish Cube 0 15-04-2008 02:56 PM
Technology ,Internet ! emad Tools 2 05-08-2006 09:52 PM


All times are GMT +2. The time now is 08:51 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2017, vBulletin Solutions Inc.
SomaSimple 2004 - 2017