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 350–400 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 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:	123
Deposited By:	Medicine
Deposited On:	2015-04-09
Last Modified:	2015-05-11
Downloads:	0