Spatiotemporal dynamics of orthographic and lexical processing in the ventral visual pathway.

ABSTRACT: Reading is a rapid, distributed process that engages multiple components of the ventral visual stream. To understand the neural constituents and their interactions that allow us to identify written words, we performed direct intra-cranial recordings in a large cohort of humans. This allowed us to isolate the spatiotemporal dynamics of visual word recognition across the entire left ventral occipitotemporal cortex. We found that mid-fusiform cortex is the first brain region sensitive to lexicality, preceding the traditional visual word form area. The magnitude and duration of its activation are driven by the statistics of natural language. Information regarding lexicality and word frequency propagates posteriorly from this region to visual word form regions and to earlier visual cortex, whic

SUBMITTER: Woolnough O 

PROVIDER: S-EPMC10365894 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature