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Titolo:
Long-term habituation of the speech-elicited mismatch negativity
Autore:
McGee, TJ; King, C; Tremblay, K; Nicol, TG; Cunningham, J; Kraus, N;
Indirizzi:
Northwestern Univ, Dept Commun Sci, Auditory Neurosci Lab, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 rosci Lab, Evanston, IL 60208 USA Northwestern Univ, Dept Neurobiol & Physiol, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 & Physiol, Evanston, IL 60208 USA Northwestern Univ, Dept Otolaryngol, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 olaryngol, Evanston, IL 60208 USA Univ Washington, Dept Commun Sci, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 pt Commun Sci, Seattle, WA 98195 USA
Titolo Testata:
PSYCHOPHYSIOLOGY
fascicolo: 4, volume: 38, anno: 2001,
pagine: 653 - 658
SICI:
0048-5772(200107)38:4<653:LHOTSM>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCHOOL-AGE-CHILDREN; DISCRIMINATION;
Keywords:
auditory evoked potential; mismatch negativity; habituation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Kraus, N Northwestern Univ, Dept Commun Sci, Auditory Neurosci Lab, Frances Searle Bldg,2299 N Campus Dr, Evanston, IL 60208 USA Northwestern Univ Frances Searle Bldg,2299 N Campus Dr Evanston IL USA 60208
Citazione:
T.J. McGee et al., "Long-term habituation of the speech-elicited mismatch negativity", PSYCHOPHYSL, 38(4), 2001, pp. 653-658

Abstract

A significant issue in the use of the mismatch negativity evoked potential(MMN) concerns its low signal-to-noise ratio (SNR). One can improve the noise level by increasing the number of samples included in the averaged response. However, improvement achieved in this way assumes that the signal. the MMN, remains stable for extended test times, an assumption which has not been tested. If the MMN is not stable, or exhibits habituation over the test session, then SNR would be adversely affected. MMN response magnitude wasmeasured in 5-min intervals over the course of a test session in response to various speech syllable contrasts. Significant long-term habituation of MMN was observed for all three subject populations tested: young adults, school-age children, and guinea pigs. The time course of the habituation and the stimulus conditions under which it occurs have important implications for research and clinical applications of the MMN. Recording procedures thatminimize habituation effects may be used to advantage to improve the signal-to-noise ratio of the MMN.

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Documento generato il 26/01/20 alle ore 16:04:58