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Titolo:
PERCEPTUAL MAGNET EFFECT IN THE LIGHT OF BEHAVIORAL AND PSYCHOPHYSIOLOGICAL DATA
Autore:
AALTONEN O; EEROLA O; HELLSTROM A; UUSIPAIKKA E; LANG AH;
Indirizzi:
UNIV TURKU,CTR COGNIT NEUROSCI FIN-20014 TURKU FINLAND UNIV TURKU,DEPT PHONET FIN-20014 TURKU FINLAND UNIV STOCKHOLM,DEPT PSYCHOL S-10691 STOCKHOLM SWEDEN UNIV TURKU,DEPT STAT FIN-20014 TURKU FINLAND TURKU UNIV CENT HOSP,DEPT CLIN NEUROPHYSIOL FIN-20014 TURKU FINLAND
Titolo Testata:
The Journal of the Acoustical Society of America
fascicolo: 2, volume: 101, anno: 1997,
pagine: 1090 - 1105
SICI:
0001-4966(1997)101:2<1090:PMEITL>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; MISMATCH NEGATIVITY MMN; SPEECH-PERCEPTION; PHONETIC CATEGORIES; LINGUISTIC EXPERIENCE; INTERNAL STRUCTURE; AUDITORY-STIMULI; STEADY-STATE; VOWEL; DISCRIMINATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
94
Recensione:
Indirizzi per estratti:
Citazione:
O. Aaltonen et al., "PERCEPTUAL MAGNET EFFECT IN THE LIGHT OF BEHAVIORAL AND PSYCHOPHYSIOLOGICAL DATA", The Journal of the Acoustical Society of America, 101(2), 1997, pp. 1090-1105

Abstract

Finnish speaking adults categorized synthetic vowels, varying in the frequency of the second formant (F2), as either /y/ or /i/. Two subject groups emerged: ''good'' and ''poor'' categorizers. In a /i/ rating experiment, only the good categorizers could consistently label their best /i/ (the prototype, P), being low in the F2 continuum. Poor categorizers rated /i/'s with high F2 values as Ps. In a same/different (AX) discrimination experiment, using the individual Ps and nonprototypes(NPs), it was more difficult for good categorizers to detect small F2deviations from the P than from an NP (the ''perceptual magnet effect''). For poor categorizers, the opposite effect was found. The same stimuli were used to record the mismatch negativity (MMN), an ERP component reflecting preattentive detection of deviations from a standard sound. For the good categorizers the MMNs were lower for Pa than for NPs; for the poor categorizers the MMNs for Ps and NPs did not differ significantly. The results show that individual listeners behaved differently in categorization and goodness rating but in the same way in attentive (AX) discrimination, being the poorest at about the same F2 location. The perceptual magnet effect was indicated in the good categorizers both by behavioral and psychophysiological (MMN) discrimination data. (C) 1997 Acoustical Society of America.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 01:48:22