Navigation Links
A better thought-controlled computer cursor
Date:11/18/2012

trode sensors and sends data to a computer. The frequency with which action potentials are generated provides the computer key information about the direction and speed of the user's intended movement.

The ReFIT algorithm that decodes these signals represents a departure from earlier models. In most neural prosthetics research, scientists have recorded brain activity while the subject moves or imagines moving an arm, analyzing the data after the fact. "Quite a bit of the work in neural prosthetics has focused on this sort of offline reconstruction," said Gilja, the first author of the paper.

The Stanford team wanted to understand how the system worked "online," under closed-loop control conditions in which the computer analyzes and implements visual feedback gathered in real time as the monkey neurally controls the cursor to toward an onscreen target.

The system is able to make adjustments on the fly when while guiding the cursor to a target, just as a hand and eye would work in tandem to move a mouse-cursor onto an icon on a computer desktop. If the cursor were straying too far to the left, for instance, the user likely adjusts their imagined movements to redirect the cursor to the right. The team designed the system to learn from the user's corrective movements, allowing the cursor to move more precisely than it could in earlier prosthetics.

To test the new system, the team gave monkeys the task of mentally directing a cursor to a target an onscreen dot and holding the cursor there for half a second. ReFIT performed vastly better than previous technology in terms of both speed and accuracy. The path of the cursor from the starting point to the target was straighter and it reached the target twice as quickly as earlier systems, achieving 75 to 85 percent of the speed of real arms.

"This paper reports very exciting innovations in closed-loop decoding for brain-machine interfaces. These innovations should lead to a s
'/>"/>

Contact: Andrew Myers
admyers@stanford.edu
650-736-2245
Stanford School of Engineering
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. New methods for better purification of wastewater
2. Breakthroughs in Chikungunya research from A*STAR spell new hope for better treatment and protection
3. UNH researchers find African farmers need better climate change data to improve farming practices
4. Giant squids giant eyes: The better to see hungry whales with
5. Improved loblolly pines better for the environment, study finds
6. Fish larvae find the reef by orienting: The earlier the better
7. Intensive kidney dialysis indicates better survival rates than conventional dialysis
8. Modern hybrid corn makes better use of nitrogen, study shows
9. Bigger gorillas better at attracting mates and raising young
10. Better housing conditions for zebrafish could improve research results
11. Better plants for biofuels
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
A better thought-controlled computer cursor
(Date:7/30/2014)... climate change on the world,s animal and plant ... to a new paper by a research team ... and other organizations. The authors claim that most ... when it comes to climate change. , ... on the "direct" threats of changing temperatures and ...
(Date:7/30/2014)... San Antonio Life Sciences Institute (SALSI), a joint venture ... and The University of Texas Health Science Center at ... Initiative Pilot Program. The winners, Emily Boice from UTSA ... receive $25,000 for their project titled, "Novel engineered ferritins ... environment." , Boice and Huang,s research is focused on ...
(Date:7/30/2014)... University associate professor Andrew S. Mount, performed cutting-edge research ... for novel anti-fouling paint for ships and boats and ... The team,s findings, published in Nature Communications ... that attaches to a wide variety of surfaces using ... an underwater heavy-duty adhesive. , "In previous research, we ...
Breaking Biology News(10 mins):Conservation scientists asking wrong questions on climate change impacts on wildlife 2Study: Marine pest provides advances in maritime anti-fouling and biomedicine 2
... hockey goalie, and two opposing players are breaking in alone ... of the linesman skating in on your left, but pay ... the two approaching players. As the action unfolds, how is ... splitting your focus of attention into multiple "spotlights?" Are you ...
... by researchers at Columbia University,s Mailman School of Public ... quality regulations proposed or recently adopted by the U.S. ... standards for reducing dangerous emissions of mercury and other ... implementing the new regulations is estimated to be about ...
... , The National Institute of Standards and Technology (NIST) ... carbon nanotube soot. Distantly related to the soot in ... is the primary industrial source of single-wall carbon nanotubes, ... NIST material offers companies and researchers a badly needed ...
Cached Biology News:How do we split our attention? 2New EPA air quality rules outweigh costs and provide major health and environmental benefits 2NIST releases first certified reference material for single-wall carbon nanotubes 2NIST releases first certified reference material for single-wall carbon nanotubes 3
(Date:7/30/2014)... July 30, 2014. Applied DNA ... that provides DNA-based authentication and security solutions and services, ... of Life Sciences, a newly created position, with a ... will lead APDN’s drive to build its business in ... healthcare customers, provide guidance to APDN’s R&D efforts, and ...
(Date:7/30/2014)... Fla. , July 30, 2014  Dyadic ... biotechnology company whose patented and proprietary technologies are ... and other proteins for the bioenergy, bio-based chemical, ... appointment of Thomas "Tom" Dubinski as Vice President ... for leading the financial and information technology operations ...
(Date:7/30/2014)... Edwardsville, IL (PRWEB) July 30, 2014 ... Dr. Arun Athmanathan will present his findings on ... of Energy conference this week in Washington, D.C. ... Department of Energy conference is a testament to ... Director John Caupert said. “Thanks to the foresight ...
(Date:7/30/2014)... LayerBio, Inc., an MIT spinoff developing novel drug ... seed financing from friends and family investors. Proceeds from ... novel sustained-release product for ophthalmology. , "We are grateful ... to this important work," said Dr. Ken Mandell, Founder ... areas in which innovations in drug delivery have already ...
Breaking Biology Technology:Dr. Michael E. Hogan, Ph.D., Joins Applied DNA Sciences as Vice President, Life Sciences 2Dr. Michael E. Hogan, Ph.D., Joins Applied DNA Sciences as Vice President, Life Sciences 3Thomas Dubinski joins Dyadic as Chief Financial Officer 2Thomas Dubinski joins Dyadic as Chief Financial Officer 3Thomas Dubinski joins Dyadic as Chief Financial Officer 4NCERC at SIUE Researcher Takes Stage at Department of Energy Conference 2NCERC at SIUE Researcher Takes Stage at Department of Energy Conference 3
... on Thursday, October 25, 2007 at ... ... Keryx Biopharmaceuticals,Inc. (Nasdaq: KERX ), a biopharmaceutical company focused on ... treatment of life-threatening,diseases, including diabetes and cancer, today announced its results ...
... Biosciences, Inc. Presents Initial Data on RDEA119 at ... and Cancer Therapeutics -, SAN FRANCISCO, Oct. ... a company focused on the discovery and development ... cancer and,inflammatory diseases, today presented preclinical data on ...
... Md., Oct. 24 MedImmune, Inc. announced,today that ... recognized the company for its employees, exceptional commitment ... Volunteer Award,for a large business. "As the ... as an outstanding corporate citizen whose employees strive ...
Cached Biology Technology:Keryx Biopharmaceuticals, Inc. Announces Third Quarter 2007 Financial Results 2Keryx Biopharmaceuticals, Inc. Announces Third Quarter 2007 Financial Results 3Keryx Biopharmaceuticals, Inc. Announces Third Quarter 2007 Financial Results 4Keryx Biopharmaceuticals, Inc. Announces Third Quarter 2007 Financial Results 5Keryx Biopharmaceuticals, Inc. Announces Third Quarter 2007 Financial Results 6New Oral MEK Inhibitor, RDEA119, Shows Favorable Anti-Tumor Properties 2New Oral MEK Inhibitor, RDEA119, Shows Favorable Anti-Tumor Properties 3New Oral MEK Inhibitor, RDEA119, Shows Favorable Anti-Tumor Properties 4
...
...
with GlutaMAXIL-glutamine...
... PURIFIED GOAT ANTI-MOUSE IgG+IgA+IgM ... conjugated with highly purified ... The antibody has been ... rat, fetal bovine, horse, ...
Biology Products: