- Title
- Electrophysiological correlates of anticipatory task-switching processes
- Creator
- Nicholson, Rebecca; Karayanidis, Frini; Poboka, Dane; Heathcote, A.; Michie, Patricia T.
- Relation
- Psychophysiology Vol. 42, no. 5, p. 540-554
- Publisher
- Society for Psychophysiological Research and Blackwell Publishing
- Resource Type
- journal article
- Date
- 2005
- Description
- Abstract 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 task-switching.
- Identifier
- uon:400
- Identifier
- http://hdl.handle.net/1959.13/25294
- Identifier
- ISSN:0048-5772
- Language
- eng
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