Type

Journal Article

Authors

Ian H Robertson
John J Foxe
Seamus Ward
Alessandra Turin
Mark A. Bellgrove
Redmond O'Connell
Paul M Dockree

Subjects

Psychology

Topics
cerebral cortex female human sustained attention evoked potentials response inhibition neural mechanisms event related potentials tasks visual perception error male young adult reference values administrative staff authors choice behavior physiology humans inhibition psychology neural inhibition reaction time attention analysis of variance

Two types of action error: electrophysiological evidence for separable inhibitory and sustained attention neural mechanisms producing error on Go/No-go tasks. (2008)

Abstract Disentangling 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.
Collections Ireland -> Trinity College Dublin -> Administrative Staff Authors (Scholarly Publications)
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Full list of authors on original publication

Ian H Robertson, John J Foxe, Seamus Ward, Alessandra Turin, Mark A. Bellgrove, Redmond O'Connell, Paul M Dockree

Experts in our system

1
Ian H Robertson
Trinity College Dublin
Total Publications: 142
 
2
John J Foxe
Trinity College Dublin
Total Publications: 42
 
3
Mark A. Bellgrove
Trinity College Dublin
Total Publications: 35
 
4
Redmond G O'Connell
Trinity College Dublin
Total Publications: 49
 
5
Paul M Dockree
Trinity College Dublin
Total Publications: 32