Word class effects upon the intrahemispheric graphic disconnection syndrome

Abstract

Word class and concreteness effects were investigated in eight hemiparetic aphasic patients who exhibited a graphic disconnection syndrome. For all patients the dissociation between writing performance with the right and left hand was greater for than for concrete nouns. The graphic disconnection syndrome was also present with adjectives, adverbs and verbs. It is speculated that the disconnection is located between the left-sided functional graphic region and the corpus callosum. Strategies for further research are outlined.