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Electrophysiological correlates of anticipatory task-switching processes


Nicholson, R and Karayanidis, F and Poboka, D and Heathcote, A and Michie, PT, Electrophysiological correlates of anticipatory task-switching processes, Psychophysiology: An International Journal, 42 pp. 540-554. ISSN 0048-5772 (2005) [Refereed Article]

DOI: doi:10.1111/j.1469-8986.2005.00350.x


Recent studies show a differential switch-related positivity emerging before a switch trial and reflecting anticipatory task-set reconfiguration processes. In this study, the switch-related positivity was examined in a cued task-switching paradigm. Cue-stimulus and response-stimulus intervals were independently manipulated to dissociate between the effects of anticipatory preparation and passive dissipation of task-set interference. Reaction time switch cost declined with increasing cue-stimulus and response-stimulus intervals, suggesting a contribution from both active preparation and passive interference processes. In cue-related difference waveforms, a switch positivity peaked around 350400 ms and is interpreted as reflecting differential activation of task-set reconfiguration. In stimulus related difference waveforms, a switch-related negativity is believed to indicate the role of S-R priming and response interference in taskswitching.

Item Details

Item Type:Refereed Article
Research Division:Psychology
Research Group:Cognitive and computational psychology
Research Field:Decision making
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Heathcote, A (Professor Andrew Heathcote)
ID Code:99784
Year Published:2005
Web of Science® Times Cited:136
Deposited By:Medicine
Deposited On:2015-04-09
Last Modified:2015-05-11

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