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Electrophysiological correlates of anticipatory task-switching processes
journal contributionposted on 2023-05-18, 09:12 authored by Nicholson, R, Karayanidis, F, Poboka, D, Heathcote, A, Michie, PT
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.
Publication titlePsychophysiology: An International Journal
Department/SchoolTasmanian School of Medicine
PublisherBlackwell Publishing Ltd
Place of publication9600 Garsington Rd, Oxford, England, Oxon, Ox4 2Dg