Journal ArticleDOI
Visual sensations produced by intracortical microstimulation of the human occipital cortex.
About:
This article is published in Medical & Biological Engineering & Computing.The article was published on 1990-05-01. It has received 285 citations till now. The article focuses on the topics: Microstimulation & Cortex (anatomy).read more
Citations
More filters
Journal ArticleDOI
Electrical stimulation of excitable tissue: design of efficacious and safe protocols.
TL;DR: The physical basis for electrical stimulation of excitable tissue, as used by electrophysiological researchers and clinicians in functional electrical stimulation, is presented with emphasis on the fundamental mechanisms of charge injection at the electrode/tissue interface.
Journal ArticleDOI
Feasibility of a visual prosthesis for the blind based on intracortical microstimulation of the visual cortex.
TL;DR: The potentially greater microelectrode density and lower power requirements of ICMS compared with surface stimulation appears encouraging for a visual prosthesis, however, further studies with blind subjects are required to optimize stimulation parameters and test complex image recognition before the feasibility of aVisual prosthesis based on ICMS can be established.
Journal ArticleDOI
Axons, but not cell bodies, are activated by electrical stimulation in cortical gray matter I. Evidence from chronaxie measurements
Lionel G. Nowak,Jean Bullier +1 more
TL;DR: Whenever a postsynaptic response is elicited after electrical stimulation of the cortical gray matter, axons (either axonal branches or axon initial segments, but not cell bodies, are the neuronal elements activated.
Journal ArticleDOI
Direct activation of sparse, distributed populations of cortical neurons by electrical microstimulation
TL;DR: The results indicate that the pattern of activated neurons likely arises from the direct activation of axons in a volume tens of microns in diameter, and that microstimulation sparsely activates neurons around the electrode, sometimes as far as millimeters away, even at low currents.
Journal ArticleDOI
Intracortical microstimulation of human somatosensory cortex
Sharlene N Flesher,Jennifer L. Collinger,Stephen T. Foldes,Stephen T. Foldes,Jeffrey M Weiss,John E. Downey,Elizabeth C. Tyler-Kabara,Sliman J. Bensmaia,Andrew B. Schwartz,Michael L. Boninger,Robert A. Gaunt +10 more
TL;DR: It is shown that microstimulation within the hand area of the somatosensory cortex of a person with long-term spinal cord injury evokes tactile sensations perceived as originating from locations on the hand and that cortical stimulation sites are organized according to expected somatotopic principles.
References
More filters
Journal ArticleDOI
Anatomy and physiology of a color system in the primate visual cortex.
TL;DR: The results suggest that a system involved in the processing of color information, especially color-spatial interactions, runs parallel to and separate from the orientation-specific system.
Journal ArticleDOI
The sensations produced by electrical stimulation of the visual cortex.
G S Brindley,W. S. Lewin +1 more
TL;DR: An array of radio receivers connected to electrodes in contact with the occipital pole of the right cerebral hemisphere has been implanted into a 52‐year‐old blind patient and by giving appropriate radio signals, the patient can be caused to experience sensations of light in the left half of the visual field.
Journal ArticleDOI
Phosphenes produced by electrical stimulation of human occipital cortex, and their application to the development of a prosthesis for the blind
W. H. Dobelle,M. G. Mladejovsky +1 more
TL;DR: To explore the feasibility of a visual prosthesis for the blind, human visual cortex has been stimulated during a series of surgical procedures on conscious volunteers undergoing other occipital lobe surgery.
Journal ArticleDOI
Artificial Vision for the Blind: Electrical Stimulation of Visual Cortex Offers Hope for a Functional Prosthesis
TL;DR: Electrical stimulation of the occipital cortex resulted in discrete photic sensations or "phosphenes" in two volunteers who had been totally blind for 7 and 28 years, respectively, which reinforces the hope that a functional visual prosthesis can be developed.
Journal ArticleDOI
Parylene as a Chronically Stable, Reproducible Microelectrode Insulator
TL;DR: The electric arc process used to expose Parylene-covered iridium and tungsten microelectrodes is found to give cleaner recording surfaces with impedances lower than those obtainable with previously described methods.
Related Papers (5)
The sensations produced by electrical stimulation of the visual cortex.
G S Brindley,W. S. Lewin +1 more