AANS: Brain machine interface can control prosthetic arm

AANS: brain machine interface can control prosthetic arm
A brain-machine interface can be used to control an anthropomorphic prosthetic arm with 10 degrees-of-freedom, according to a study presented at the annual meeting of the American Association of Neurological Surgeons, held from April 27 to May 1 in New Orleans.

(HealthDay)—A brain-machine interface can be used to control an anthropomorphic prosthetic arm with 10 degrees-of-freedom, according to a study presented at the annual meeting of the American Association of Neurological Surgeons, held from April 27 to May 1 in New Orleans.

Elizabeth C. Tyler-Kabara, M.D., Ph.D., from the Children's Hospital of Pittsburg, and colleagues used multi-modality image guidance to implant two 96-channel intracortical in the of an individual with tetraplegia. They conducted six months of brain-machine interface training with an aim of controlling an anthropomorphic prosthetic limb with 10 degrees-of-freedom.

The researchers found that on the second day of training, the participant demonstrated the ability to move the device freely in three-dimensional workspace. Robust, 7 degree-of-freedom movements were routinely performed after 13 weeks. Over time, the success rate, completion time, and path efficiency of target-based reaching task performance improved. Robust 10 degree-of-freedom movements were routinely performed after six months. The was also used to perform skillful and coordinated reach and grasp movements resulting in clinically significant gains in upper-limb function tests.

"This study demonstrates that a person with chronic tetraplegia can perform consistent, natural, and complex movements with an anthropomorphic robotic arm to regain clinically significant function," the authors write.

More information: Press Release
More Information

add to favorites email to friend print save as pdf

Related Stories

Paralyzed patient moves prosthetic arm with her mind

Apr 30, 2013

(HealthDay)—It sounds like science fiction, but researchers are gaining ground in developing mind-controlled robotic arms that could give people with paralysis or amputated limbs more independence.

Electrocorticographic signals may restore arm movement

Mar 30, 2012

(HealthDay) -- Electrocorticography (ECoG) signals from patients with chronic motor dysfunction represent motor information that may be useful for controlling prosthetic arms, according to a study published ...

Recommended for you

Damage to brain networks affects stroke recovery

Nov 21, 2014

(Medical Xpress)—Initial results of an innovative study may significantly change how some patients are evaluated after a stroke, according to researchers at Washington University School of Medicine in St. ...

Dopamine leaves its mark in brain scans

Nov 21, 2014

Researchers use functional magnetic resonance imaging (fMRI) to identify which areas of the brain are active during specific tasks. The method reveals areas of the brain, in which energy use and hence oxygen ...

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.