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Conference ProceedingsAbstract Details2007 Welsh Branch 36th Annual Student ConferenceConference Venue: University of Wales, Swansea Welsh Branch From: 05 Mar 2007 To: 05 Mar 2007 Peer-Reviewed Inhibitory Mechanisms in Task-switchingJames A. GrangeUniversity of Wales, Bangor The ability to flexibly switch attention among competing task demands has been studied using the task-switching paradigm. Task-switching is achieved by inhibiting a previous task-set whilst engaging in a new task-set. This "Backward-Inhibition" (BI) is implied by increased reaction time when returning to a recently performed task-set (ABA sequence) compared to a task not recently performed (CBA), due to persisting inhibition. BI has been suggested to be tied exclusively to top-down, endogenous acts of control. My work suggests that BI can be found in extremely simple, exogenously-cued task-sets, proposing that inhibition is a necessary pre-requisite of any act of cognitive control. Lack of inhibitory control has been implied in Schizophrenia and ADHD, and greater understanding of this mechanism is essential.
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