title: The extent of the region of occipital cortex that when stimulated gives phosphenes fixed in the visual field.
mesh_terms: D001766:Blindness / Q000503:physiopathology; D004558:Electric Stimulation; D006801:Humans; D008297:Male; D008875:Middle Aged; D012174:Retinitis Pigmentosa / Q000503:physiopathology; D014793:Visual Cortex / Q000503:physiopathology*; D014794:Visual Fields