Townsend, B R; Subasi, E; Scherberger, H (2008). Real time decoding of hand grasping signals from macaque premotor and parietal cortex. In: 13th International FES Society Conference, Freiburg, Germany, 21 September 2008 - 25 September 2008, 203-205.
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A brain machine interface (BMI) for visually guided grasping would provide significant benefits for paralyzed patients, given the crucial role these movements play in our everyday life. We have developed a BMI to decode grasp shape in real-time in macaque monkeys. Neural activity was evaluated using chronically implanted elec-trodes in the anterior intraparietal cortex (AIP) and ventral premotor cortex (F5), areas that are known to be in-volved in the transformation of visual signals into hand grasping instructions. In a first study, we decoded two grasp types (power and precision grip) and three grasp orientations (target oriented vertically or tilted left or right) from the neural activity during movement planning with an accuracy of about 70%. These results are proof-of-concept for a BMI for visually guided grasping that could be extended for larger number of grip types and grip orientations, as needed for prosthetic applications in humans.
|Item Type:||Conference or Workshop Item (Speech), refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Neuroinformatics|
|Dewey Decimal Classification:||570 Life sciences; biology|
|Event End Date:||25 September 2008|
|Deposited On:||11 Mar 2009 08:35|
|Last Modified:||04 Apr 2012 12:44|
|Other Identification Number:||ini:20321|
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