From percept to concept in the ventral temporal lobes: Graded hemispheric specialisation based on stimulus and task.

ABSTRACT: The left and right ventral anterior temporal lobes (vATL) have been implicated as key regions for the representation of conceptual knowledge. However, the nature and degree of hemispheric specialisation in their function is unclear. To address this issue, we investigated hemispheric specialisation in the ventral temporal lobes using a distortion-corrected spin-echo fMRI protocol that enhanced signal in vATL. We employed an orthogonal manipulation of stimulus (written words vs pictured objects) and task (naming vs recognition). Words elicited left-lateralised vATL activation while objects elicited bilateral activation with no hemispheric bias. In contrast, posterior ventral temporal cortex exhibited a rightward bias for objects as well as a leftward bias for words. Naming tasks produced lef

SUBMITTER: Hoffman P 

PROVIDER: S-EPMC5885984 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature