Electrocorticography links human temporoparietal junction to visual perception.
Electrical stimulation of visual cortex can produce a visual percept (phosphene). We electrically stimulated visual cortex in humans implanted with subdural electrodes while recording from other brain sites. Phosphene perception occurred only if stimulation evoked high-frequency gamma oscillations in the temporoparietal junction (TPJ), a brain region associated with visual extinction and neglect. Electrical stimulation of TPJ modified the detectability of low-contrast visual stimuli.
Department of Neurobiology and Anatomy, University of Texas Health Science Center at Houston, Houston, Texas, USA. michael.s.beauchamp@uth.tmc.edu
Michael S
MS
Beauchamp
Ping
P
Sun
Sarah H
SH
Baum
Andreas S
AS
Tolias
Daniel
D
Yoshor
D000293:Adolescent; D000328:Adult; D058256:Brain Waves / Q000502:physiology; D003344:Cortical Synchronization / Q000502:physiology*; D004558:Electric Stimulation / Q000379:methods; D004567:Electrodes, Implanted; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010296:Parietal Lobe / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods*; D013702:Temporal Lobe / Q000502:physiology*; D014793:Visual Cortex / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*