| Investigation of stimulus-response compatibility using a startling acoustic stimulus. | |
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MedLine Citation:
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PMID: 22099151 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We investigated the processes underlying stimulus-response compatibility by using a lateralized auditory stimulus in a simple and choice reaction time (RT) paradigm. Participants were asked to make either a left or right key lift in response to either a control (80dB) or startling (124dB) stimulus presented to either the left ear, right ear, or both ears. In the simple RT paradigm, we did not find a compatibility effect for either control or startle trials but did find a right-ear advantage which we attribute to anatomical asymmetry of auditory pathways. In the choice RT paradigm, we found compatibility effects for both startle and control trials as well a high incidence of error for contralateral stimulus-response mapping. We attribute these results to automatic activation of the ipsilateral response, which must then be inhibited prior to initiation of the correct response. The presence of compatibility effects for startle trials also suggest that similar pathways are being used to initiate movements in a choice RT situation, as opposed to involuntary triggering that is thought to occur in a simple RT situation. |
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Authors:
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Dana Maslovat; Anthony N Carlsen; Ian M Franks |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-16 |
Journal Detail:
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Title: Brain and cognition Volume: - ISSN: 1090-2147 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8218014 Medline TA: Brain Cogn Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Inc. All rights reserved. |
Affiliation:
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School of Kinesiology, University of British Columbia, Canada V6T 1Z1. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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