Saturation in Phosphene Size with Increasing Current Levels Delivered to Human Visual Cortex

• Published in: The Journal of neuroscience Vol. 37; no. 30; pp. 7188 - 7197
• Main Authors: Bosking, William H., Sun, Ping, Ozker, Muge, Pei, Xiaomei, Foster, Brett L., Beauchamp, Michael S., Yoshor, Daniel
• Format: Journal Article
• Language: English
• Published: United States Society for Neuroscience 26.07.2017
• Subjects: Adult; Cerebral cortex; Electric Stimulation; Electrodes; Evoked Potentials, Visual - physiology; Female; Humans; Male; Mathematical models; Middle Aged; Nerve Net - physiology; Neural prostheses; Phosphene; Phosphenes; Phosphenes - physiology; Retina; Saturation; Stimulation; Visual cortex; Visual Cortex - physiology; Visual Fields - physiology; Visual observation; direct cortical stimulation; electrical stimulation; visual cortex; phosphene; electrical brain stimulation; magnification factor

Electrically stimulating early visual cortex results in a visual percept known as a phosphene. Although phosphenes can be evoked by a wide range of electrode sizes and current amplitudes, they are invariably described as small. To better understand this observation, we electrically stimulated 93 ele...