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• W2912389151 abstract "Event Abstract Back to Event tDCS Electrode Montage Differentially Affects Autonomic Arousal and Working Memory Performance Jacqueline A. Rushby1*, Frances De Blasio1, Travis Wearne1, Katie Osborne-Crowley1, Heather Francis1, Skye McDonald1 and Colleen Loo2 1 University of New South Wales, Psychology, Australia 2 University of New South Wales, Psychiatry, Australia Aims. Transcranial direct current stimulation (tDCS) effects on working memory (WM) have been widely investigated, with generally inconsistent effects reported. Such variability has been attributed to inconstancy in stimulation parameters including stimulation montage, intensity and duration, and outcome measure/s. Moreover, the cognitive enhancment effects of tDCS may occur (at least partially) via the modulation of autonomic arousal, and this is yet to be well investigated. The current study thus assesed the effects of three tDCS montages on psychophyiological indices of arousal and behavioural performance during a WM task. Methods. Seventy-two healthy young adults completed a two-part study employing a counterbalanced cross-over design in which they received both an active and sham stimulation session one week apart. Participants were randomly assigned to the focal frontal (FF), broad frontal (BF), or broad parietal (BP) stimulation group. The 1- and 2-back variants of the n-back task were completed during active/sham tDCS administration. Pre- and post-task arousal was assessed via skin conductance level recorded during six minute eyes-closed/eyes-open/eyes-closed resting baseline conditions. Results. Higher arousal correlated with improved accuracy and faster response-time (RT) for the sham condition across the groups. Following active tDCS, arousal showed a decrease for the FF group, no change in the BF group, and an increase for the BP group. These arousal changes differentialy affected performance for each group. Arousal correlated with poorer accuracy for the FF group, the BF group performance differed little between active and sham sessions, and for the BP group, arousal was associated with poorer accuracy, and an increase in faster RTs. Conclusion. FF stimulation seemed to impair WM performance in this healthy sample, while BF stimulation had little effect, and BP stimulation appeared to increase behavioural impulsivity. The selection of tDCS montage has significant consequences for both arousal and behavioural outcomes in the n-back WM task. Keywords: tDCS, skin conductance level, Arousal, working memory, electrodeposition Conference: ASP2017: 27th Annual Meeting for the Australasian Society for Psychophysiology, Parramatta, Australia, 29 Nov - 1 Dec, 2017. Presentation Type: Oral Presentation Topic: Abstract (General) Citation: Rushby JA, De Blasio F, Wearne T, Osborne-Crowley K, Francis H, McDonald S and Loo C (2019). tDCS Electrode Montage Differentially Affects Autonomic Arousal and Working Memory Performance. Conference Abstract: ASP2017: 27th Annual Meeting for the Australasian Society for Psychophysiology. doi: 10.3389/conf.fnhum.2017.224.00007 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 31 Oct 2017; Published Online: 25 Jan 2019. * Correspondence: Dr. Jacqueline A Rushby, University of New South Wales, Psychology, Kensington, Australia, j.rushby@unsw.edu.au Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Jacqueline A Rushby Frances De Blasio Travis Wearne Katie Osborne-Crowley Heather Francis Skye McDonald Colleen Loo Google Jacqueline A Rushby Frances De Blasio Travis Wearne Katie Osborne-Crowley Heather Francis Skye McDonald Colleen Loo Google Scholar Jacqueline A Rushby Frances De Blasio Travis Wearne Katie Osborne-Crowley Heather Francis Skye McDonald Colleen Loo PubMed Jacqueline A Rushby Frances De Blasio Travis Wearne Katie Osborne-Crowley Heather Francis Skye McDonald Colleen Loo Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page." @default.
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• W2912389151 title "tDCS Electrode Montage Differentially Affects Autonomic Arousal and Working Memory Performance" @default.
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