Volume 2007, Issue 1 093968
Research Article
Open Access

The P300 as a Marker of Waning Attention and Error Propensity

Avijit Datta

Avijit Datta

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

Hull York Medical School, York Hospitals NHS Foundation Trust, York YO31 8HE, UK nhs.uk

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Rhodri Cusack

Rhodri Cusack

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

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Kari Hawkins

Kari Hawkins

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

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Joost Heutink

Joost Heutink

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

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Chris Rorden

Chris Rorden

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA sc.edu

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Ian H. Robertson

Ian H. Robertson

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

Department of Psychology and Institute of Neuroscience, Trinity College, Dublin 2, Ireland tcd.ie

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Tom Manly

Corresponding Author

Tom Manly

Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 7EF, UK cam.ac.uk

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First published: 11 February 2008
Citations: 25
Academic Editor: Saied Sanei

Abstract

Action errors can occur when routine responses are triggered inappropriately by familiar cues. Here, EEG was recorded as volunteers performed a “go/no-go” task of long duration that occasionally and unexpectedly required them to withhold a frequent, routine response. EEG components locked to the onset of relevant go trials were sorted according to whether participants erroneously responded to immediately subsequent no-go trials or correctly withheld their responses. Errors were associated with a significant relative reduction in the amplitude of the preceding P300, that is, a judgement could be made bout whether a response-inhibition error was likely before it had actually occurred. Furthermore, fluctuations in P300 amplitude across the task formed a reliable associate of individual error propensity, supporting its use as a marker of sustained control over action.

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