Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/929803
- Title
- Sequence effects support the conflict theory of N2 and P3 in the Go/NoGo task
- Author/Creator
-
Smith, Janette L.;
Smith, Elizabeth A.;
Provost, Alexander L.;
Heathcote, Andrew
- Institution
- The University of Newcastle. Faculty of Science & Information Technology, School of Psychology
- Description
- In two-choice tasks the preceding sequence of stimuli robustly influences both the P3 ERP component and reaction time (RT) to the current stimulus. We examined sequenceeffects in both two-choice and Go/NoGotasks to distinguish between inhibition and conflict accounts of the N2 and P3 components. RT results suggested similar subjective expectancies were generated in the Go/NoGo and two-choice task. N2 was increased for all unexpected stimuli, even when no response inhibition was required, consistent with a conflict interpretation. The Go/NoGoP3 results also suggested a conflict explanation, and that this conflict was reduced if the response had been recently performed. These results support a reconsideration of the roles of N2 and P3 in all inhibition and conflicttasks, and the Go/NoGotask in particular.
- Relation
- International Journal of Psychophysiology Vol. 75, Issue 3, p. 217-226
- Publisher Link
- http://dx.doi.org/10.1016/j.ijpsycho.2009.11.002
- Date
- 2010
- Publisher
- Elsevier
- Keyword(s)
-
N2;
P3;
Go/NoGo;
sequence effects;
response competition;
conflict
- Resource Type
- journal article
- Identifier
- http://hdl.handle.net/1959.13/929803
- Identifier
- ISSN:0167-8760
- Reviewed
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