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Titolo:
NEUROPERCEPTUAL DIFFERENCES IN CONSONANT AND VOWEL DISCRIMINATION - AS REVEALED BY DIRECT CORTICAL ELECTRICAL INTERFERENCE
Autore:
BOATMAN D; HALL C; GOLDSTEIN MH; LESSER R; GORDON B;
Indirizzi:
JOHNS HOPKINS UNIV,SCH MED,DEPT NEUROL,600 N WOLFE ST,MEYER 222 BALTIMORE MD 21287 JOHNS HOPKINS UNIV,SCH MED,DEPT NEUROSURG BALTIMORE MD 21287 JOHNS HOPKINS UNIV,SCH MED,DEPT BIOSTAT BALTIMORE MD 21287 JOHNS HOPKINS UNIV,SCH MED,DEPT ELECT & COMP ENGN BALTIMORE MD 21287 JOHNS HOPKINS UNIV,SCH MED,DEPT COGNIT SCI BALTIMORE MD 21287 JOHNS HOPKINS UNIV,SCH MED,ZANVYL KRIEGER MIND BRAIN INST BALTIMORE MD 21287
Titolo Testata:
Cortex
fascicolo: 1, volume: 33, anno: 1997,
pagine: 83 - 98
SICI:
0010-9452(1997)33:1<83:NDICAV>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPEECH-PERCEPTION; TEMPORAL-LOBE; AUDITORY COMPREHENSION; STOP CONSONANTS; LEXICAL ACCESS; LANGUAGE; APHASIA; STIMULATION; PLACE; ARTICULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
54
Recensione:
Indirizzi per estratti:
Citazione:
D. Boatman et al., "NEUROPERCEPTUAL DIFFERENCES IN CONSONANT AND VOWEL DISCRIMINATION - AS REVEALED BY DIRECT CORTICAL ELECTRICAL INTERFERENCE", Cortex, 33(1), 1997, pp. 83-98

Abstract

The effects of direct cortical electrical interference on consonant and vowel discrimination were investigated in five patients with implanted subdural electrode arrays. Without electrical interference, patients' performance discriminating consonants and vowels was intact. With electrical interference, consonant discrimination was impaired at one electrode site in each patient on the superior temporal gyrus of the lateral left perisylvian cortex. Conversely, vowel and tone discrimination remained relatively intact when tested with electrical interference at the same site. Analysis of patients' consonant discrimination errors revealed that neither differences in acoustic temporal structure nor syllable position fully account for the consonant-vowel perceptual dissociations elicited. Our data suggest that at the cortical level consonant and vowel perception are intrinsically distinct perceptual phenomena. The selective impairment of consonant, but not vowel, discrimination further suggests that consonant and vowel perception are distinguished by differences in relative dependence on the functional - perhaps integrative - resources of the left lateral superior temporal gyrus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 19:45:37