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Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects.

dc.contributor.authorMattler, Uwe
dc.contributor.authorvan der Lugt, Arie
dc.contributor.authorMünte, Thomas F.
dc.date.accessioned2010-09-21T06:54:41Z
dc.date.available2010-09-21T06:54:41Z
dc.date.issued2006
dc.identifier.citationMattler, Uwe; van der Lugt, Arie; Münte, Thomas F (2006): Combined expectancies: electrophysiological evidence for the adjustment of expectancy effects. - BMC neuroscience, Vol. 7, p. 37
dc.relation.ISSN1471-2202
dc.identifier.urihttp://resolver.sub.uni-goettingen.de/purl?gs-1/5141
dc.description.abstractBACKGROUND: When subjects use cues to prepare for a likely stimulus or a likely response, reaction times are facilitated by valid cues but prolonged by invalid cues. In studies on combined expectancy effects, two cues can independently give information regarding two dimensions of the forthcoming task. In certain situations, cueing effects on one dimension are reduced when the cue on the other dimension is invalid. According to the Adjusted Expectancy Model, cues affect different processing levels and a mechanism is presumed which is sensitive to the validity of early level cues and leads to online adjustment of expectancy effects at later levels. To examine the predictions of this model cueing of stimulus modality was combined with response cueing. RESULTS: Behavioral measures showed the interaction of cueing effects. Electrophysiological measures of the lateralized readiness potential (LRP) and the N200 amplitude confirmed the predictions of the model. The LRP showed larger effects of response cues on response activation when modality cues were valid rather than invalid. N200 amplitude was largest with valid modality cues and invalid response cues, medium with invalid modality cues, and smallest with two valid cues. CONCLUSION: Findings support the view that the validity of early level expectancies modulates the effects of late level expectancies, which included response activation and response conflict in the present study.
dc.language.isoeng
dc.publisherBioMed Central
dc.rightsopenAccess
dc.rights.urihttp://goedoc.uni-goettingen.de/goescholar/License_Goedoc_2009_03.txt
dc.subjectExpectancy; Attention; Motor Preparation; Lateralized Readiness Potential
dc.subject.ddc570
dc.titleCombined expectancies: electrophysiological evidence for the adjustment of expectancy effects.
dc.typeanthologyArticle
dc.identifier.doi10.1186/1471-2202-7-37
dc.type.versionpublishedVersion
dc.bibliographicCitation.volume7
dc.type.subtypeanthologyArticle
dc.identifier.pmid16674805
dc.bibliographicCitation.articlenumber37
dc.notes.oagold
dc.description.statuspeerReviewed
dc.bibliographicCitation.journalBMC Neuroscience


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