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Titolo:
HOW LURIA AND VINOGRADOVA THEORY ON THE DYNAMICS OF THE SEMANTIC SYSTEMS COULD EXPLAIN AN UNUSUAL CASE OF LEXICAL COMPREHENSION DISORDERS
Autore:
GAINOTTI G; SILVERI MC; DANIELE A; GIUSTOLISI L;
Indirizzi:
CATHOLIC UNIV SACRED HEART,POLICLIN GEMELLI,INST NEUROL,LARGO A GEMELLI 8 I-00168 ROME ITALY
Titolo Testata:
Aphasiology
fascicolo: 2, volume: 9, anno: 1995,
pagine: 153 - 161
SICI:
0268-7038(1995)9:2<153:HLAVTO>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPREADING ACTIVATION; APHASIA; MEMORY; FACILITATION; RETRIEVAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
G. Gainotti et al., "HOW LURIA AND VINOGRADOVA THEORY ON THE DYNAMICS OF THE SEMANTIC SYSTEMS COULD EXPLAIN AN UNUSUAL CASE OF LEXICAL COMPREHENSION DISORDERS", Aphasiology, 9(2), 1995, pp. 153-161

Abstract

According to Luria and Vinogradova (1959) the relationships among different words may change in various physiological and pathological conditions. In normal subjects, and in patients with mild or moderate forms of brain damage, a dominant position is assumed by words semantically related to the target. On the contrary, in patients with severe language impairment the dominance of the more complex semantic connectionsdisappear and the simpler sound connections remain preeminent. This theory allowed us to explain the unusual pattern of lexical comprehension errors shown by our patient G.P., affected by a severe form of slowly progressive aphasia. On word-picture matching tasks this patient showed a strong tendency to point more to the phonological distracters than to the semantic distracters, in spite of a massive anemia and of aspared capacity to apprehend the phonological shape of words. This unusual form of lexical comprehension disorder was explained by assuming: (a) that G.P. could covertly evoke a phonological label from pictures that he was unable to name; (b) that, in agreement with Luria and Vinogradova's theory, this covert activation usually concerned a whole cluster of words having in common a certain number of phonological features.

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Documento generato il 27/11/20 alle ore 13:58:17