Accession Number : AD1047301


Title :   Optimal Achievable Encoding for Brain Machine Interface


Descriptive Note : Technical Report,01 Oct 2016,30 Sep 2017


Corporate Author : Leland Stanford Junior University, The Stanford United States


Personal Author(s) : Chichilnisky,Eduardo


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/1047301.pdf


Report Date : 22 Dec 2017


Pagination or Media Count : 10


Abstract : Our goal was to develop efficient algorithms for encoding visual stimuli using an artificial retina, in a manner that optimizes the artificial visual image delivered to the brain. We did this by focusing on three components required. First, we developed novel models of retinal encoding that improve upon the state of the art, by using machine learning methods to incorporate spatial and temporal nonlinearities. Second, we developed novel methods of decoding images from retinal responses, using artificial neural networks, and by applying linear decoding to complete recorded populations of retinal ganglion cells for the first time. Third, we developed a greedy, dictionary-based encoding approach to translate a visual image into sequential patterns of electrical stimulation in real time, in a manner that optimizes visual image transfer to the brain.


Descriptors :   BRAINCOMPUTER INTERFACES , COMPUTER VISION , RETINA , PROSTHETICS , MACHINE LEARNING , IMAGE PROCESSING , OPTIMIZATION , VISUAL PERCEPTION


Subject Categories : Human Factors Engineering & Man Machine System


Distribution Statement : APPROVED FOR PUBLIC RELEASE