- Title
- Components of task-set reconfiguration: differential effects of 'switch-to' and 'switch-away' cues
- Creator
- Nicholson, Rebecca Anne; Karayanidis, Frini; Davies, Anna; Michie, Patricia Therese
- Relation
- Brain Research Vol. 1121, Issue 1, p. 160-176
- Publisher Link
- http://dx.doi.org/10.1016/j.brainres.2006.08.101
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2006
- Description
- Preparation for a switch in task was manipulated using two types of switch cues: ‘switchaway’from the previous task-set and ‘switch-to’ a different task-set. Increasing cue–stimulus interval resulted in a reduction in reaction time switch cost for switch-to trials only. Cuelocked difference waveforms for both switch-to and switch-away trials showed a large, broad differential positivity, relative to repeat waveforms. However, the later part of the differential positivity was significantly reduced on switch-away trials. A differential positivity then emerged after stimulus onset for switch-away trials only. This suggests that, with a long cue–stimulus interval, the new task-set was implemented before stimulus onset for switch-to trials, whereas on switch-away trials this process was delayed until after stimulus onset leading to increased switch cost. These results demonstrate dissociable effects of switching away from the current task-set and switching to the upcoming task-set and support the interpretation that the differential positivity observed for switch-to trials reflects processes associated with anticipatory task-set reconfiguration.
- Subject
- ERP; task-switching; task-set reconfiguration; attentional control
- Identifier
- uon:1243
- Identifier
- http://hdl.handle.net/1959.13/26943
- Identifier
- ISSN:0006-8993
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