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The P300 as a marker of waning attention and error propensity
Authors:
Datta, A.K., CUSACK, R., Hawkins, K., Heutink, J., Rorden, C., Robertson, I. and MANLY, T.
Reference:
Computational Intelligence and Neuroscience, 93968.
Year of publication:
2007
CBU number:
6599
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 P300Â that is, you could a make judgement about 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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