Topic: cortical prosthetic vision

Current approaches to cortical prosthetic vision rely on electrically evoked phosphenes, whose dynamic appearance in the visual field could enable functional sight in acquired blindness. Akin to an input/output dynamic-range problem, the spatiotemporal resolution of phosphene-based vision is constrained by the accuracy with which activity can be modulated in V1 and simultaneously, by the discriminability of evoked activity in higher visual areas (i.e. V2 and V4), for different stimulation parameters. However, the high-dimensionality of the stimulation parameter space makes impractical to exten