The relation of object naming and other visual speech production tasks: a large scale voxel-based morphometric study.

ABSTRACT: We report a lesion-symptom mapping analysis of visual speech production deficits in a large group (280) of stroke patients at the sub-acute stage (<120 days post-stroke). Performance on object naming was evaluated alongside three other tests of visual speech production, namely sentence production to a picture, sentence reading and nonword reading. A principal component analysis was performed on all these tests' scores and revealed a 'shared' component that loaded across all the visual speech production tasks and a 'unique' component that isolated object naming from the other three tasks. Regions for the shared component were observed in the left fronto-temporal cortices, fusiform gyrus and bilateral visual cortices. Lesions in these regions linked to both poor object naming and impairment

SUBMITTER: Lau JK 

PROVIDER: S-EPMC4325087 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature