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Titolo:
CLUSTERING AND SWITCHING ON VERBAL FLUENCY - THE EFFECTS OF FOCAL FRONTAL-LOBE AND TEMPORAL-LOBE LESIONS
Autore:
TROYER AK; MOSCOVITCH M; WINOCUR G; ALEXANDER MP; STUSS D;
Indirizzi:
BAYCREST CTR GERIATR CARE,DEPT PSYCHOL,3560 BATHURST ST TORONTO ON M6A 2E1 CANADA UNIV TORONTO TORONTO ON CANADA BAYCREST CTR GERIATR CARE,ROTMAN RES INST N YORK ON CANADA UNIV TORONTO,ERINDALE COLL MISSISSAUGA ON L5L 1C6 CANADA TRENT UNIV PETERBOROUGH ON K9J 7B8 CANADA BOSTON UNIV,BOSTON VETERANS ADM MED CTR,MEMORY DISORDERS CTR,SCH MED BOSTON MA 02215 BRAINTREE REHABIL HOSP NETWORK BRAINTREE MA 00000
Titolo Testata:
Neuropsychologia
fascicolo: 6, volume: 36, anno: 1998,
pagine: 499 - 504
SICI:
0028-3932(1998)36:6<499:CASOVF>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
WORD FLUENCY; APHASIA;
Keywords:
FOCAL BRAIN LESIONS; TEMPORAL-LOBE LESIONS; FRONTAL-LOBE LESIONS; SEMANTIC FLUENCY; PHONEMIC FLUENCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
A.K. Troyer et al., "CLUSTERING AND SWITCHING ON VERBAL FLUENCY - THE EFFECTS OF FOCAL FRONTAL-LOBE AND TEMPORAL-LOBE LESIONS", Neuropsychologia, 36(6), 1998, pp. 499-504

Abstract

We examined the hypothesis that, on verbal fluency, clustering (i.e. generating words within subcategories) is related to temporal-lobe functioning, whereas switching (i.e. shifting between subcategories) is related to frontal-lobe functioning. Tests of phonemic and semantic fluency were administered to 53 patients with focal frontal-lobe lesions (FL), 23 patients with unilateral temporal-lobe lesions (TL) and 55 matched controls. Performance by FL patients was consistent with our hypothesis: in comparison to controls, patients with left-dorsolateral orsuperior-medial frontal lesions switched less frequently and producednormal cluster sizes on both phonemic and semantic fluency. Performance by TL patients was not consistent across fluency tasks and providedpartial support for our hypothesis. On phonemic fluency, TI, patientswere unimpaired on both switching and clustering. On semantic fluency, TL patients were impaired on switching in comparison to controls andleft TL patients produced smaller clusters than right TL patients. The best indices for discriminating the patient groups, therefore, were phonemic-fluency switching (impaired only with frontal lesions) and semantic-fluency clustering (impaired only with temporal-lobe lesions). (C) 1998 Elsevier Science Ltd. All rights reserved.

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Documento generato il 04/07/20 alle ore 21:21:33