Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
AUTOMATIC DISCRIMINATION OF PHONETICALLY RELEVANT AND IRRELEVANT VOWEL PARAMETERS AS REFLECTED BY MISMATCH NEGATIVITY
Autore:
AALTONEN O; EEROLA O; LANG AH; UUSIPAIKKA E; TUOMAINEN J;
Indirizzi:
UNIV TURKU,DEPT PHONET,HENRIKINKATU 2 SF-20500 TURKU FINLAND UNIV TURKU,CTR COGNIT NEUROSCI SF-20520 TURKU FINLAND UNIV TURKU,DEPT CLIN NEUROPHYSIOL SF-20520 TURKU FINLAND UNIV TURKU,DEPT STAT SF-20500 TURKU FINLAND UNIV TURKU,DEPT NEUROL SF-20520 TURKU FINLAND
Titolo Testata:
The Journal of the Acoustical Society of America
fascicolo: 3, volume: 96, anno: 1994,
pagine: 1489 - 1493
SICI:
0001-4966(1994)96:3<1489:ADOPRA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
POTENTIALS; ATTENTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
O. Aaltonen et al., "AUTOMATIC DISCRIMINATION OF PHONETICALLY RELEVANT AND IRRELEVANT VOWEL PARAMETERS AS REFLECTED BY MISMATCH NEGATIVITY", The Journal of the Acoustical Society of America, 96(3), 1994, pp. 1489-1493

Abstract

An auditory event-related brain potential called mismatch negativity (MMN) was measured to study the perception of vowel pitch and formant frequency. In the MMN paradigm, deviant vowels differed from the standards either in F0 or F2 with equal relative steps. Pure tones of corresponding frequencies were used as control stimuli. The results indicate that the changes in F0 or F2 of vowels significantly affected the MMN amplitudes. The only variable significantly affecting the MMN latencies was sex which, however, did not have any effect on the amplitudes of the MMN. As expected, the MMN amplitudes increased with an increasein the acoustical difference between the standards and the deviants in all cases. On the average, the amplitudes were lower for the vowels than for the pure tones of equal loudness. However, in vowels, minor frequency changes in F0 produced higher MMN amplitudes than similar relative changes in F2. It was also noted that even the smallest and phonetically irrelevant change in F2 was detected by the MMN process. In overall, the results demonstrate that the MMN can be measured separately for F0 and F2 of vowels, although the MMN responses show large interindividual differences.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 01:06:51