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Event-related potential correlates of sound organization: Early sensory and late cognitive effects

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Tartalom: http://www.sciencedirect.com/science/article/pii/S0301051...
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published



Type = Article
Cím:
Event-related potential correlates of sound organization: Early sensory and late cognitive effects
Létrehozó:
Szalárdy, Orsolya
Bőhm, Tamás M.
Bendixen, Alexandra
Winkler, István
Kiadó:
Elsevier
Dátum:
2013-04
Téma:
BF09 Sensation / észlelés, érzékelés
BF13 Memory and learning / emlékezet, tanulás
QP Physiology / élettan
Tartalmi leírás:
We tested whether incoming sounds are processed differently depending on how the preceding sound sequence has been interpreted by the brain. Sequences of a regularly repeating three-tone pattern, the perceived organization of which spontaneously switched back and forth between two alternative interpretations, were delivered to listeners. Occasionally, a regular tone was exchanged for a slightly or moderately lower one (deviants). The electroencephalogram (EEG) was recorded while listeners continuously marked their perception of the sound sequence. We found that for both the regular and the deviant tones, the early exogenous P1 and N1 amplitudes varied together with the perceived sound organization. Percept dependent effects on the late endogenous N2 and P3a amplitudes were only found for deviant tones. These results suggest that the perceived sound organization affects sound processing both by modulating what information is extracted from incoming sounds as well as by influencing how deviant sound events are evaluated for further processing.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Szalárdy, Orsolya and Bőhm, Tamás M. and Bendixen, Alexandra and Winkler, István (2013) Event-related potential correlates of sound organization: Early sensory and late cognitive effects. Biological Psychology, 93 (1). pp. 97-104. ISSN 0301-0511
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