Navigation Links
Pitt/UPMC team describes findings from BCI study in spinal cord-injured man in PLoS One
Date:2/8/2013

PITTSBURGH, Feb. 8, 2013 Researchers at the University of Pittsburgh School of Medicine and UPMC describe in PLoS ONE how an electrode array sitting on top of the brain enabled a 30-year-old paralyzed man to control the movement of a character on a computer screen in three dimensions with just his thoughts. It also enabled him to move a robot arm to touch a friend's hand for the first time in the seven years since he was injured in a motorcycle accident.

With brain-computer interface (BCI) technology, the thoughts of Tim Hemmes, who sustained a spinal cord injury that left him unable to move his body below the shoulders, were interpreted by computer algorithms and translated into intended movement of a computer cursor and, later, a robot arm, explained lead investigator Wei Wang, Ph.D., assistant professor, Department of Physical Medicine and Rehabilitation, Pitt School of Medicine.

"When Tim reached out to high-five me with the robotic arm, we knew this technology had the potential to help people who cannot move their own arms achieve greater independence," said Dr. Wang, reflecting on a memorable scene from September 2011 that was re-told in stories around the world. "It's very important that we continue this effort to fulfill the promise we saw that day."

Six weeks before the implantation surgery, the team conducted functional magnetic resonance imaging (fMRI) of Mr. Hemmes' brain while he watched videos of arm movement. They used that information to place a postage stamp-size electrocortigraphy (ECoG) grid of 28 recording electrodes on the surface of the brain region that fMRI showed controlled right arm and hand movement. Wires from the device were tunneled under the skin of his neck to emerge from his chest where they could be connected to computer cables as necessary.

For 12 days at his home and nine days in the research lab, Mr. Hemmes began the testing protocol by watching a virtual arm move, which triggered neural signals that were sensed by the electrodes. Distinct signal patterns for particular observed movements were used to guide the up and down motion of a ball on a computer screen. Soon after mastering movement of the ball in two dimensions, namely up/down and right/left, he was able to also move it in/out with accuracy on a 3-dimensional display.

"During the learning process, the computer helped Tim hit his target smoothly by restricting how far off course the ball could wander," Dr. Wang said. "We gradually took off the 'training wheels,' as we called it, and he was soon doing the tasks by himself with 100 percent brain control."

The robot arm was developed by Johns Hopkins University's Applied Physics Laboratory. Currently, Jan Scheuermann, of Whitehall, Pa., is testing another BCI technology at Pitt/UPMC.


'/>"/>

Contact: Anita Srikameswaran
SrikamAV@upmc.edu
412-578-9193
University of Pittsburgh Schools of the Health Sciences
Source:Eurekalert

Related medicine news :

1. Intensivists at night improve patient outcomes in some ICUs, says Pitt/UPMC team
2. UNC team describes novel inflammatory protein function
3. NIH team describes protective role of skin microbiota
4. New report describes 7 essential steps toward an AIDS-free generation
5. Jeffrey W. Olin, DO, authors study that describes symptoms and severity of fibromuscular dysplasia
6. Study Says Timing of Lunch May Impact Weight Loss – Celebrity Beverly Hills Doctor Discusses the Findings
7. Sovereign Health of California Is Concerned About Recent CDC Findings Highlighting The Health Risk of Alcohol Abuse And Binge Drinking Among Women
8. Researchers uncover genes role in rheumatoid arthritis, findings pave way for new treatments
9. Study findings have potential to prevent,reverse disabilities in children born prematurely
10. New findings on killer bacterias defence
11. Lorna Kleidman Responds to New Findings that Exercise Enhances Memory
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/25/2017)... ... April 25, 2017 , ... As President Trump challenges the ... how his administration could impact the employee benefits industry. James Slotnick, AVP, Government ... likely to make it through Congress. His discussion will focus on the current ...
(Date:4/25/2017)... ... April 25, 2017 , ... Patients who would ... results in a fraction of the time as traditional braces – Wilckodontics®. Dr. ... Specialists, now offers this revolutionary treatment with or without a referral. , ...
(Date:4/25/2017)... ... April 25, 2017 , ... Buyers and sellers in the ... dispensaries and head shops –can’t help but be heartened by the industry’s current surge. ... odor aptly described as “skunk smell.” At last they can simply, safely and ...
(Date:4/25/2017)... ... April 25, 2017 , ... There is no better place in South Florida ... report in the May issue of Consumer Reports focused on heart health. , ... achieved during and after coronary bypass and aortic valve replacement procedures. , Consumer ...
(Date:4/24/2017)... ... April 24, 2017 , ... ... featuring Bring Your Own Device (BYOD) capabilities at Telehealth 2.0, the American Telemedicine ... telehealth bundles, which pairs medical devices with a pre-programmed tablet in a remarkably ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... LUND, Sweden , April 20, 2017 /PRNewswire/ ... OTCQX: NEVPF) ("NeuroVive") today announced positive preclinical ... company,s preclinical compound for non-alcoholic steatohepatitis (NASH), ... NV556 has previously ... STAM™ NASH model. Today, NeuroVive,s scientists present ...
(Date:4/19/2017)...  IRIDEX Corporation (Nasdaq: IRIX ) today ... first quarter 2017 after the close of trading on ... host a corresponding conference call beginning at 2:30 p.m. ... in listening to the conference call may do so ... 326-3030 for international callers, using conference ID: 92158987.  A ...
(Date:4/19/2017)... DIEGO , April 19, 2017  Sorrento ... an antibody-centric, clinical-stage biopharmaceutical company developing new treatments ... announced the closing of its previously announced underwritten ... stock at a public offering price of $2.00 ... and estimated offering expenses payable by Sorrento.  The ...
Breaking Medicine Technology: