Upright face-preferential high-gamma responses in lower-order visual areas: evidence from intracranial recordings in children.

ABSTRACT: Behavioral studies demonstrate that a face presented in the upright orientation attracts attention more rapidly than an inverted face. Saccades toward an upright face take place in 100-140 ms following presentation. The present study using electrocorticography determined whether upright face-preferential neural activation, as reflected by augmentation of high-gamma activity at 80-150 Hz, involved the lower-order visual cortex within the first 100 ms post-stimulus presentation. Sampled lower-order visual areas were verified by the induction of phosphenes upon electrical stimulation. These areas resided in the lateral-occipital, lingual, and cuneus gyri along the calcarine sulcus, roughly corresponding to V1 and V2. Measurement of high-gamma augmentation during central (circular) and periphe

SUBMITTER: Matsuzaki N 

PROVIDER: S-EPMC4340724 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature