Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE MISMATCH NEGATIVITY FOR DURATION DECREMENT OF AUDITORY-STIMULI INHEALTHY-SUBJECTS
Autore:
JOUTSINIEMI SL; ILVONEN T; SINKKONEN J; HUOTILAINEN M; TERVANIEMI M; LEHTOKOSKI A; RINNE T; NAATANEN R;
Indirizzi:
UNIV HELSINKI,DEPT PSYCHOL,COGNIT BRAIN RES UNIT,MERITULLINK 1,POB 13SF-00100 HELSINKI FINLAND UNIV HELSINKI,CENT HOSP,MED ENGN CTR,BIOMAG LAB FIN-00290 HELSINKI FINLAND
Titolo Testata:
Electroencephalography and clinical neurophysiology. Evoked potentials
fascicolo: 2, volume: 108, anno: 1998,
pagine: 154 - 159
SICI:
0168-5597(1998)108:2<154:TMNFDD>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISEASE;
Keywords:
MISMATCH NEGATIVITY (MMN); AUDITORY EVOKED POTENTIALS; DURATION DEVIANTS; HEALTHY SUBJECTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
S.L. Joutsiniemi et al., "THE MISMATCH NEGATIVITY FOR DURATION DECREMENT OF AUDITORY-STIMULI INHEALTHY-SUBJECTS", Electroencephalography and clinical neurophysiology. Evoked potentials, 108(2), 1998, pp. 154-159

Abstract

The amplitude and latency of the mismatch negativity (MMN) elicited by occasional shorter-duration tones (25 and 50 ms) in a sequence of 75ms standard tones were studied in 40 healthy subjects (9-84 years). The replicability and age dependence of the MMN-responses were determined. The 25 ms deviant tone evoked a clear response in 39 of the subjects, while the 50 ms deviant tone evoked an observable MMN only in 32 of the subjects. The MMN peak amplitude for the 25 ms deviants was significantly larger than for the 50 ms deviants. There was no significantdifference in the peak latencies (measured from stimulus offset). Forthe 25 ms deviant, the amplitude diminished with increasing age. The MMN curves for the 25 ms deviant, measured on separate days in 14 subjects, looked very replicable. As a result of noise and filtering effect, the product-moment correlations were poor. The results indicate that the signal-to-noise ratio for the MMN to 25 ms deviants, obtained even in a 25 min recording session, is large enough for clinical use andindividual diagnostics when undetectable (or very low amplitude) MMN is used as a sign of pathology. However, judged from the low correlation coefficients, despite the good replicability in visual evaluation, better methods for MMN quantification have to be used for clinical follow-up. (C) 1998 Elsevier Science Ireland Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 13:43:55