Dynamic Stimulation of Visual Cortex Produces Form Vision in Sighted and Blind Humans

Michael S. Beauchamp; Denise Oswalt; Ping Sun; Brett L. Foster; John F. Magnotti; Soroush Niketeghad; Nader Pouratian; William H. Bosking; Daniel Yoshor

doi:10.1016/j.cell.2020.04.033

Figure 3.

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Effectiveness of dynamic current steering in a blind participant.

(A) A medial view of a cortical surface model of the participant’s occipital lobe (dashed line indicates calcarine sulcus; same participant as Figure 2). Five subdural electrodes are shown as blue discs (letters show electrode labels). (B) Dynamic current steering was implemented by delivering time-varying amounts of current to the electrodes. (C) The participant reported the percept of a point traversing the visual field in a horizontal direction.