Task reconfiguration and carryover in task switching: an event-related potential study

Brain Research
Shulan Hsieh, Poyu Cheng

Abstract

This study investigated the electrophysiological correlates of the processes involved in task switching. A pair-wise task-switching paradigm was used where each trial comprised two tasks that were either the same (task repeat) or different (task switch). In the paradigm, task-switch and repeat trials are compared in conditions of foreknowledge and non-foreknowledge of the forthcoming task type and during different response-stimulus intervals (RSIs). The results of this study show that, before the second task began in a task-pair trial, i.e., during the RSI, there was a CNV-like negativity for all trials. This indicates a general anticipatory effect. In foreknowledge conditions, there is an additional switch-specific reconfiguration process followed by a task-specific (including both switch- and repeat-related) preparatory process. During the post-task 2 stage, P3b was found to be smaller in switch trials than in repeat trials. Such differential P3b between switch and repeat trials appeared earlier and larger in foreknowledge than in non-foreknowledge conditions. The results of this study support the existence of advance preparation and uphold the role of carryover effects in task switching.

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Citations

May 15, 2008·Journal of Cognitive Neuroscience·Glenn R WylieJohn J Foxe
May 26, 2010·Cognitive, Affective & Behavioral Neuroscience·Agatha LenartowiczJonathan D Cohen
May 19, 2011·Cognitive, Affective & Behavioral Neuroscience·Nachshon MeiranChi-Chih Chang
Aug 23, 2008·The European Journal of Neuroscience·Aureliu LavricStephen Monsell
May 12, 2010·Psychophysiology·Kimberley VandammeAndré Vandierendonck
Dec 14, 2011·Human Brain Mapping·John G GrundyJudith M Shedden
Dec 23, 2008·Brain Research·Anja FiedlerRolf Ulrich
Jun 25, 2010·Brain Research·Kaoru Umebayashi, Tsunetaka Okita
Mar 4, 2008·Brain Research·Shulan Hsieh, Hanjung Liu
Oct 10, 2006·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Shulan Hsieh, Poyu Chen
Dec 3, 2014·Biological Psychology·Shulan HsiehFan Lin
May 6, 2014·Neuropsychologia·Wouter De Baene, Marcel Brass
Aug 5, 2017·Psychophysiology·Alexander ProvostFrini Karayanidis

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