scholarly journals Right hemispheric dominance of visual phenomena evoked by intracerebral stimulation of the human visual cortex

2013 ◽  
Vol 35 (7) ◽  
pp. 3360-3371 ◽  
Author(s):  
Jacques Jonas ◽  
Solène Frismand ◽  
Jean-Pierre Vignal ◽  
Sophie Colnat-Coulbois ◽  
Laurent Koessler ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Hemispheric Dominance ◽  
Human Visual Cortex ◽  
Visual Phenomena ◽  
Stimulation Of

P378: Right hemispheric dominance of visual phenomena evoked by intracerebral stimulations of the human visual cortex

2014 ◽  
Vol 125 ◽  
pp. S149
Author(s):  
S. Frismand ◽  
J. Jonas ◽  
J.-P. Vignal ◽  
S. Colnat-Coulbois ◽  
L. Koessler ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Hemispheric Dominance ◽  
Human Visual Cortex ◽  
Visual Phenomena

scholarly journals Electrical Stimulation of the Human Visual Cortex Preliminary Report

1974 ◽  
Vol 1 (4) ◽  
pp. 236-238 ◽  
Author(s):  
Andrew Talalla ◽  
Leo Bullara ◽  
Robert Pudenz
Keyword(s):  
Electrical Stimulation ◽  
Visual Cortex ◽  
Feasibility Study ◽  
Preliminary Report ◽  
Visual Prosthesis ◽  
Human Visual Cortex ◽  
Stimulation Of

SUMMARY:A feasibility study for the development of a human visual prosthesis has led several workers to observe the effects of electrical stimulation of the human visual cortex. Experience with such stimulations of three normal-sighted patients is reported. The results confirm some of the findings of other workers, but do not show that multiple phosphenes were experienced by our patients, using strictly limited parameters of stimulation.

Long-term enhanced desynchronization of the alpha rhythm following tetanic stimulation of human visual cortex

2006 ◽  
Vol 398 (3) ◽  
pp. 220-223 ◽  
Author(s):  
Wesley C. Clapp ◽  
Suresh D. Muthukumaraswamy ◽  
Jeff P. Hamm ◽  
Tim J. Teyler ◽  
Ian J. Kirk
Keyword(s):  
Visual Cortex ◽  
Alpha Rhythm ◽  
Tetanic Stimulation ◽  
Human Visual Cortex ◽  
Stimulation Of

scholarly journals The human visual cortex response to melanopsin-directed stimulation is accompanied by a distinct perceptual experience

2017 ◽  
Vol 114 (46) ◽  
pp. 12291-12296 ◽  
Author(s):  
Manuel Spitschan ◽  
Andrew S. Bock ◽  
Jack Ryan ◽  
Giulia Frazzetta ◽  
David H. Brainard ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Visual Perception ◽  
Functional Mri ◽  
Perceptual Experience ◽  
Visual Pathway ◽  
Visual Functions ◽  
Human Visual Cortex ◽  
Pupil Constriction ◽  
Stimulation Of

The photopigment melanopsin supports reflexive visual functions in people, such as pupil constriction and circadian photoentrainment. What contribution melanopsin makes to conscious visual perception is less studied. We devised a stimulus that targeted melanopsin separately from the cones using pulsed (3-s) spectral modulations around a photopic background. Pupillometry confirmed that the melanopsin stimulus evokes a response different from that produced by cone stimulation. In each of four subjects, a functional MRI response in area V1 was found. This response scaled with melanopic contrast and was not easily explained by imprecision in the silencing of the cones. Twenty additional subjects then observed melanopsin pulses and provided a structured rating of the perceptual experience. Melanopsin stimulation was described as an unpleasant, blurry, minimal brightening that quickly faded. We conclude that isolated stimulation of melanopsin is likely associated with a response within the cortical visual pathway and with an evoked conscious percept.

Mapping the Representation of the Visual Field by Electrical Stimulation of Human Visual Cortex

1979 ◽  
Vol 88 (4) ◽  
pp. 727-735 ◽  
Author(s):  
Wm. H. Dobelle ◽  
Joseph Turkel ◽  
David C. Henderson ◽  
Jerald R. Evans
Keyword(s):  
Electrical Stimulation ◽  
Visual Cortex ◽  
Visual Field ◽  
Human Visual Cortex ◽  
Stimulation Of

scholarly journals The human visual cortex response to melanopsin-directed stimulation is accompanied by a distinct perceptual experience

2017 ◽  
Author(s):  
Manuel Spitschan ◽  
Andrew S. Bock ◽  
Jack Ryan ◽  
Giulia Frazzetta ◽  
David H. Brainard ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Visual Perception ◽  
Functional Mri ◽  
Perceptual Experience ◽  
Visual Pathway ◽  
Visual Functions ◽  
Human Visual Cortex ◽  
Pupil Constriction ◽  
Stimulation Of

AbstractThe photopigment melanopsin supports reflexive visual functions in people, such as pupil constriction and circadian photoentrainment. What contribution melanopsin makes to conscious visual perception is less studied. We devised a stimulus that targeted melanopsin separately from the cones using pulsed (3 s) spectral modulations around a photopic background. Pupil-lometry confirmed that the melanopsin stimulus drives a retinal mechanism distinct from luminance. In each of four subjects, a functional MRI response in area V1 was found. This response scaled with melanopic contrast and was not easily explained by imprecision in the silencing of the cones. Twenty additional subjects then observed melanopsin pulses and provided a structured rating of the perceptual experience. Melanopsin stimulation was described as an unpleasant, blurry, minimal brightening that quickly faded. We conclude that isolated stimulation of melanopsin is likely associated with a response within the cortical visual pathway and with an evoked conscious percept.

scholarly journals 206 Dynamic Stimulation of Human Visual Cortex Produces Useful Percepts of Visual Forms in Sighted and Blind Subjects

Neurosurgery ◽  
2018 ◽  
Vol 65 (CN_suppl_1) ◽  
pp. 117-117
Author(s):  
Daniel Yoshor ◽  
William H Bosking ◽  
Brett L Foster ◽  
Ping Sun ◽  
Soroush Niketeghad ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Human Visual Cortex ◽  
Dynamic Stimulation ◽  
Stimulation Of
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