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dc.contributor.authorO'CONNELL, REDMOND
dc.date.accessioned2008-10-21T18:50:37Z
dc.date.available2008-10-21T18:50:37Z
dc.date.issued2008
dc.date.submitted2008en
dc.identifier.citationO'Connell RG, Dockree PM, Bellgrove MA, Turin A, Ward S, Foxe JJ, et al. `Two types of action error: electrophysiological evidence for separable inhibitory and sustained attention neural mechanisms producing error on Go/No-go tasks? in Journal of Cognitive Neuroscience, 2008en
dc.identifier.issn51076
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/23584
dc.descriptionIN_PRESSen
dc.description.abstractDisentangling the component processes that contribute to human executive control is a key challenge for cognitive neuroscience. Here, we employ Event-Related Potentials to provide electrophysiological evidence that action errors during a Go/No-go task can result either from sustained attention failures, or from failures of response inhibition, and that these two processes are temporally and physiologically dissociable, even though the behavioural error ? a non-intended response ? is the same. Thirteen right-handed participants performed a version of a Go/No-go task in which stimuli were presented in a fixed and predictable order thus encouraging attentional drift and a second version in which an identical set of stimuli were presented in a random order thus placing greater emphasis on response inhibition. Electro-cortical markers associated with goal maintenance (late positivity, alpha synchronisation) distinguished correct and incorrect performance in the fixed condition while errors in the random condition were linked to a diminished N2/P3 inhibitory complex. In addition, the amplitude of the Error-Related Negativity did not differ between correct and incorrect responses in the fixed condition consistent with the view that errors in this condition do not arise from a failure to resolve response competition. Our data provide an electrophysiological dissociation of sustained attention and response inhibition.en
dc.format.extent243923 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherMIT Pressen
dc.relation.ispartofseriesJournal of Cognitive Neuroscienceen
dc.rightsYen
dc.subjectAdministrative Staff Authorsen
dc.titleTwo types of action error: electrophysiological evidence for separable inhibitory and sustained attention neural mechanisms producing error on Go/No-go tasks.en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/reoconne


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