Patent Number: 8,792,976

Title: Brain machine interface

Abstract: Artificial control of a prosthetic device is provided. A brain machine interface contains a mapping of neural signals and corresponding intention estimating kinematics (e.g. positions and velocities) of a limb trajectory. The prosthetic device is controlled by the brain machine interface. During the control of the prosthetic device, a modified brain machine interface is developed by modifying the vectors of the velocities defined in the brain machine interface. The modified brain machine interface includes a new mapping of the neural signals and the intention estimating kinematics that can now be used to control the prosthetic device using recorded neural brain signals from a user of the prosthetic device. In one example, the intention estimating kinematics of the original and modified brain machine interface includes a Kalman filter modeling velocities as intentions and positions as feedback.

Inventors: Gilja; Vikash (San Francisco, CA), Nuyujukian; Paul (Stanford, CA), Chestek; Cynthia A (Menlo Park, CA), Cunningham; John P (Saratoga, CA), Yu; Byron M. (San Jose, CA), Ryu; Stephen I (Menlo Park, CA), Shenoy; Krishna V. (Palo Alto, CA)

Assignee: The Board of Trustees of the Leland Stanford Junior University

International Classification: A61B 5/04 (20060101)

Expiration Date: 7/29/12018