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Surprising sequential effects on MMN

  • Metaadatok
Tartalom: http://real.mtak.hu/34995/
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published



Type = Article
Cím:
Surprising sequential effects on MMN
Létrehozó:
Frost, J.D.
Winkler, IstvĂĄn
Provost, Alexander
Todd, Juanita
Kiadó:
Elsevier
Dátum:
2016-04
Téma:
BF01 Psychophysiology / pszichofiziolĂłgia
BF13 Memory and learning / emlĂŠkezet, tanulĂĄs
BF20 Abnormal psychology / lelki betegsĂŠgek
Tartalmi leírás:
The mismatch negativity (MMN) is conceptualised as a confidence-weighted error signal elicited when a deviation violates the predicted next-state based on regularity. The mechanisms underpinning its generation remain contentious. Smaller MMN response is a robust finding in schizophrenia and reduced amplitude may implicate impairment in prediction-error signalling. An enriched understanding of factors that influence MMN size in healthy people is a prerequisite for translating the relevance of reduced MMN in schizophrenia. This paper features two studies designed to explore factors that impact MMN in healthy individuals. Study 1 confirms that MMN amplitude does not faithfully reflect transition statistics and is susceptible to order-driven bias. In Study 2, we demonstrate that an order-driven bias remains despite repeated encounters with sound sequences. These data demonstrate that factors that impact on MMN size in non-clinical groups are not fully understood and that some mechanisms driving relevance filtering are likely influenced by ‘top-down’ expectations.
Nyelv:
angol
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Frost, J.D. and Winkler, IstvĂĄn and Provost, Alexander and Todd, Juanita (2016) Surprising sequential effects on MMN. Biological Psychology, 116. pp. 47-56. ISSN 0301-0511
Kapcsolat:
10.1016/j.biopsycho.2015.10.005