@article {IOPORT.05734394, author = {Datta, Avijit and Cusack, Rhodri and Hawkins, Kari and Heutink, Joost and Rorden, Chris and Robertson, Ian H. and Manly, Tom}, title = {The P300 as a marker of waning attention and error propensity.}, year = {2007}, journal = {Computational Intelligence and Neuroscience}, volume = {2007}, issn = {1687-5265}, pages = {Article ID 93968, 9 p.}, publisher = {Hindawi Publishing Corporation, New York, NY}, doi = {10.1155/2007/93968}, abstract = {Summary: 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.}, identifier = {05734394}, }