Lexical judgments after right- or left-hemisphere injury.
Patients with unilateral left- or right-hemisphere lesions were asked to make similarity judgments to visually presented words on the basis of rhyme, meaning or visual similarity. The left-hemisphere-injured group was significantly impaired, relative to controls, for all types of lexical judgments, with the greatest impairment in the rhyme condition. Patients with right-hemisphere injury were also impaired, but only when lexical judgments were based on meaning. The results are generally consistent with normal and split-brain lateralization findings, and provide evidence supportive of a right-hemisphere contribution to some aspects of lexical semantic processing.
D000368:Aged; D002540:Cerebral Cortex / Q000503:physiopathology*; D002561:Cerebrovascular Disorders / Q000523:psychology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007600:Judgment; D007807:Language Tests; D008297:Male; D012660:Semantics; D014796:Visual Perception / Q000502:physiology