CAPTURING ENVIRONMENTAL SALIENCE VIA AUTOMATIC ERROR-DETECTION

Abstract

Event Abstract Back to Event CAPTURING ENVIRONMENTAL SALIENCE VIA AUTOMATIC ERROR-DETECTION Malcolm Brunton1*, Steve Provost1 and Justin Gaetano1 1 Southern Cross University, Psychology, School of Health and Human Sciences, Australia Mismatch Negativity (MMN) is an event-related potential (ERP) to a deviant cue following an established sequence of sensory stimuli. Some accounts of MMN (e.g., predictive coding) propose that MMN is a unique new component reflecting the detection of change. In contrast, the adaptation hypothesis assumes MMN reflects the operation of ‘fresh’ neuronal pathways to overcome habituation of the standard. If correct, then the size of MMN will be critically dependent upon the rate at which habituation takes place to the standard stimulus. To date, almost all experiments concerned with MMN have employed simple synthetic sinusoidal tones, which could be expected to show similar habituation characteristics. Aims: To investigate the development of habituation of, and MMN generated by, stimuli which differ in the degree to which they are synthetic (e.g., sinusoidal tones) or natural (e.g., heartbeats). Method: Eight volunteers participated in an auditory MMN experiment using a series of roving ‘oddball’ trials involving two synthetic auditory cues (a 200 Hz and a 500 Hz tone) and two natural sounds (a heartbeat and a gunshot). Results: The ERPs to the different stimuli differed markedly, with a prominent P1 and P300a component being evident to the gunshot, and more characteristic N1 and N2 components being found to the tones. Strong habituation of the P300, N1 and N2 components was evident, but was considerably smaller to the P1. Conclusion: Differences in the initial response to the stimuli make it difficult to compare rates of habituation across the stimuli. However, habituation occurred to all stimuli. The direction of this change was in some cases consistent with an MMN response, but in others was in the opposite direction to that anticipated by a unique component account. These data thus fit more comfortably within an adaptation hypothesis account. Keywords: habituation, event-related potential, electroencephalograph, Adaptation hypothesis, Mismatch-negativity Conference: Southern Cross University 13th Annual Honours Psychology Research Conference, Coffs Harbour, New South Wales, Australia, 7 Oct - 7 Oct, 2016. Presentation Type: Research Topic: Psychology Citation: Brunton M, Provost S and Gaetano J (2016). CAPTURING ENVIRONMENTAL SALIENCE VIA AUTOMATIC ERROR-DETECTION. Front. Public Health. Conference Abstract: Southern Cross University 13th Annual Honours Psychology Research Conference. doi: 10.3389/conf.FPUBH.2016.02.00010 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: 29 Sep 2016; Published Online: 30 Sep 2016. * Correspondence: Mr. Malcolm Brunton, Southern Cross University, Psychology, School of Health and Human Sciences, Coffs Harbour, NSW, 2450, Australia, m.brunton.10@student.scu.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 Malcolm Brunton Steve Provost Justin Gaetano Google Malcolm Brunton Steve Provost Justin Gaetano Google Scholar Malcolm Brunton Steve Provost Justin Gaetano PubMed Malcolm Brunton Steve Provost Justin Gaetano 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.