Post-task P3-changes following a brief, rigorous visual task indicate individual differences in the task-specific ability.

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dc.contributor.authorSircar, Sabyasachien_US
dc.contributor.authorGautam, Sujataen_US
dc.contributor.authorTandon, Om Prakashen_US
dc.date.accessioned2004-07-15en_US
dc.date.accessioned2009-06-01T05:49:54Z
dc.date.available2004-07-15en_US
dc.date.available2009-06-01T05:49:54Z
dc.date.issued2004-07-15en_US
dc.description.abstractThe P3 latency in an auditory oddball ERP paradigm is known to get prolonged after a few hours of mental task. The present study shows that it takes merely a few minutes of challenging visual mental activity to produce significant changes in P3 latency in the visual oddball ERP paradigm. However, the mental activity results in a shortening of P3-latency almost as often as it results in its prolongation. Similarly, the post-task P3 amplitude is higher or lower with nearly equal incidences. Following the task, the reaction time shortens as often as it prolongs. It seems that the P3 changes and their variations through electrode sites signify individual differences in the amount and extent of additional neuronal resources tapped by the subject in coping with the challenging task, and that it leaves an aftereffect for several minutes after the mental workload is withdrawn. These aftereffects get indexed in the P3 wave characteristics of a much simpler ERP paradigm with more change occurring in the better performers. In the clinical context, these observations raise doubts about the diagnostic value of P3 latency or amplitude without knowledge of the immediate history of mental workload.en_US
dc.description.affiliationDepartment of Physiology, University College of Medical Sciences, Delhi-110 095.en_US
dc.identifier.citationSircar S, Gautam S, Tandon OP. Post-task P3-changes following a brief, rigorous visual task indicate individual differences in the task-specific ability. Indian Journal of Physiology and Pharmacology. 2004 Jul; 48(3): 311-20en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/106916
dc.language.isoengen_US
dc.source.urihttps://www.ijpp.comen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshEvent-Related Potentials, P300 --physiologyen_US
dc.subject.meshHumansen_US
dc.subject.meshIndividualityen_US
dc.subject.meshMaleen_US
dc.subject.meshPhotic Stimulation --methodsen_US
dc.subject.meshPsychomotor Performance --physiologyen_US
dc.subject.meshReaction Time --physiologyen_US
dc.subject.meshTime Factorsen_US
dc.titlePost-task P3-changes following a brief, rigorous visual task indicate individual differences in the task-specific ability.en_US
dc.typeComparative Studyen_US
dc.typeJournal Articleen_US
dc.typeResearch Support, Non-U.S. Gov'ten_US
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