Hypergraphia: a right hemisphere syndrome.
A new right hemisphere symptom is reported. Five stroke patients with lesions in the perisylvian cortico-subcortical or thalamic region of the right hemisphere produced linguistically correct but semantically loose writing. The behaviour was initiated by subtle prompting and continued semiautomatically. A possible mechanism underlying this hypergraphia is discussed.
D000368:Aged; D001921:Brain / Q000473:pathology*; D002561:Cerebrovascular Disorders / Q000175:diagnosis / Q000473:pathology*; D004292:Dominance, Cerebral; D005260:Female; D006236:Handwriting; D006801:Humans; D008297:Male; D008875:Middle Aged; D013577:Syndrome; D013687:Telencephalon / Q000098:blood supply; D013788:Thalamus / Q000098:blood supply