Neuro-anatomical correlates of impaired retrieval of verbs and nouns: Interaction of grammatical class, imageability and actionality
| Autor: | Davide Crepaldi, Mariangela Taricco, Caterina Pistarini, Silvia Aggujaro, Claudio Luzzatti |
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| Přispěvatelé: | Aggujaro, S, Crepaldi, D, Pistarini, C, Taricco, M, Luzzatti, C |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Medial part
Linguistics and Language medicine.medical_specialty Cognitive Neuroscience noun-verb dissociation Experimental and Cognitive Psychology Verb Audiology Left posterior M-PSI/02 - PSICOBIOLOGIA E PSICOLOGIA FISIOLOGICA imageability grammatical class Temporal lobe brain localization Lesion naming impairment Arts and Humanities (miscellaneous) Noun medicine noun-verb dissociation grammatical class naming impairment brain localization actionality Part of speech imageability agrammatism wernicke's aphasia anomic aphasia right-hemisphere language Linguistics Brain lesions medicine.symptom Psychology |
| Popis: | We investigated the areas of the brain that are involved in the storage of lexical representations of verbs and nouns by localizing the brain lesions causing disproportionate impairment to the retrieval of these lexical categories in a sample of 20 Italian aphasic patients. In the majority of patients, with disproportionate impairment of nouns, the lesion involved the medial part of the middle and inferior left temporal gyri. In contrast, patients with disproportionate impairment of verbs clustered in two major subsets: either left posterior temporal lobe and inferior parietal lesions, or extensive left fronto-temporal lesions. In a second analysis, an attempt was made to disentangle the effect of imageability from disproportionate verb impairment: in at least two cases, verb damage was found to persist even after the imageability effect was removed. The relationship between imageability and actionality was also investigated: no interaction was found between these variables. A last analysis focused on the mechanisms underlying temporo-parietal damage in verb-impaired patients. Results indicate a critical role of the temporo-parietal area when retrieving verbs, irrespective of their degree of actionality. (c) 2005 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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