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Event Abstract Back to Event Intensity and Trial Effects from Simple Auditory Stimuli in a Dishabituation Paradigm Brett MacDonald1* and Robert J. Barry1 1 University of Wollongong, Australia Aim: We investigated variations of intensity and novelty in the rarely-used auditory dishabituation paradigm. Stimulus-response (S-R) patterns were examined for autonomic and central measures and compared to the phasic skin conductance response (SCR) ‘yard-stick’ of the orienting reflex (OR). Method: Sixteen undergraduates experienced twelve 1000 Hz tones (60/80 dB, 50 ms with 15 ms rise/fall times) presented with random ISIs (45 to 70 s), and no task requirements. Subjects were counterbalanced according to the starting tone intensity. The first 10 standard trials were of one intensity, followed by a change trial at the other intensity (recovery trial), and a subsequent dishabituation trial at the initial tone. The evoked cardiac response (ECR), Respiratory Pause (RP), SCR, and single-trial ERPs from 19 sites, were collected. EOG-corrected ERP data were submitted to a temporal prinicipal components analysis (PCA). Results: SCR displayed decrement, recovery, and dishabituation; intensity effects were apparent as a group x trials interaction at the recovery trial. ECR and the PCA components P1, N1-3, N1-1, PN, P3a, and SW showed no decrement. RP, P3b, and HabP3 showed decrement, but recovery was evident only in RP and HabP3. Dishabituation was apparent solely in SCR. Intensity effects were observed in SCR, P3a, and P3b. Conclusions: The S-R patterns of the autonomic measures were consistent with previous findings. No ERP component showed the hallmark S-R pattern of the OR. That is, fractionation of responses were found for autonomic and central measures, consistent with Preliminary Process Theory (PPT). Keywords: orienting reflex, Preliminary Process Theory (PPT), dishabituation, Intensity, trials, Principal Component Analysis Conference: ASP2013 - 23rd Annual meeting of the Australasian Society for Psychophysiology, Wollongong, Australia, 20 Nov - 22 Nov, 2013. Presentation Type: Oral Presentation Topic: Learning Citation: MacDonald B and Barry RJ (2013). Intensity and Trial Effects from Simple Auditory Stimuli in a Dishabituation Paradigm. Conference Abstract: ASP2013 - 23rd Annual meeting of the Australasian Society for Psychophysiology. doi: 10.3389/conf.fnhum.2013.213.00036 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: 05 Nov 2013; Published Online: 05 Nov 2013. * Correspondence: Mr. Brett MacDonald, University of Wollongong, Wollongong, Australia, brettell08@yahoo.com 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 Brett MacDonald Robert J Barry Google Brett MacDonald Robert J Barry Google Scholar Brett MacDonald Robert J Barry PubMed Brett MacDonald Robert J Barry 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.

Highlights

  • Abstract presented at the 23rd Australasian Society for Psychophysiology Conference, 20-22 Nov 2013, Wollongong, Australia Keywords intensity, simple, trial, auditory, stimuli, dishabituation, paradigm, effects Disciplines Education | Social and Behavioral Sciences Publication Details MacDonald, B. & Barry, R

  • We investigated variations of intensity and novelty in the rarely-used auditory dishabituation paradigm

  • The first 10 standard trials were of one intensity, followed by a change trial at the other intensity, and a subsequent dishabituation trial at the initial tone

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Faculty of Arts, Social Sciences & Humanities Intensity and trial effects from simple auditory stimuli in a dishabituation paradigm Brett MacDonald University of Wollongong, bm12@uowmail.edu.au Follow this and additional works at: https://ro.uow.edu.au/sspapers Part of the Education Commons, and the Social and Behavioral Sciences Commons Recommended Citation MacDonald, Brett and Barry, Robert, "Intensity and trial effects from simple auditory stimuli in a dishabituation paradigm" (2013).

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