John S Pezaris
Affiliation: Harvard University
- Getting signals into the brain: visual prosthetics through thalamic microstimulationJohn S Pezaris
Department of Neurosurgery, Massachusetts General Hospital Harvard Medical School, Boston, Massachusetts, USA
Neurosurg Focus 27:E6. 2009..The theory of operation of visual prostheses is discussed, along with a review of the current state of knowledge. Finally, the visual prosthesis is proposed as a model for a general high-fidelity machine-brain interface...
- Simulations of electrode placement for a thalamic visual prosthesisJohn S Pezaris
Neurosurgery Department, Massachusetts General Hospital, Boston, MA 02114, USA
IEEE Trans Biomed Eng 56:172-8. 2009..For idealized microwire electrodes, spacing as large as 600 microm in three dimensions would allow for over 250 phosphenes per visual hemifield in macaques, and over 800 in humans...
- The spatial receptive field of thalamic inputs to single cortical simple cells revealed by the interaction of visual and electrical stimulationPrakash Kara
Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
Proc Natl Acad Sci U S A 99:16261-6. 2002..These findings extend previous results from intracellular recordings, but also demonstrate the effectiveness of an extracellular method of measuring subthreshold afferent input to cortex...
- Visual acuity of simulated thalamic visual prostheses in normally sighted humansBéchir Bourkiza
Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
PLoS ONE 8:e73592. 2013..As pattern matching can substantially boost effective acuity, these results suggest post-implant therapy should specifically address feature detection skills. ..
- Perceptual learning in a non-human primate model of artificial visionNathaniel J Killian
Department of Neurosurgery, Massachusetts General Hospital, Boston, MA 02114
Sci Rep 6:36329. 2016..Taken together, the findings suggest that learning of perceptual grouping in a gaze-contingent visual prosthesis can be described simply by the density of visual activation...
- Demonstration of artificial visual percepts generated through thalamic microstimulationJohn S Pezaris
Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA
Proc Natl Acad Sci U S A 104:7670-5. 2007..Microstimulation produced predictable visual percepts, showing that this technique may be useful for a visual prosthesis...