Sequential Processing in the Traditional Go/NoGo Paradigm
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1
University of Wollongong, School of Psychology, Australia
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2
Brain & Behaviour Research Institute, Australia
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3
National Institute of Complimentary Medicine, Australia
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4
Western Sydney University, School of Science and Health, Australia
Aims: This study compares the series of ERP components associated with auditory equiprobable and traditional Go/NoGo tasks, to improve our conceptualisation of those components, and explore the generalisability of a sequential processing schema.
Method: Continuous EEG data, recorded in-task from sixty healthy young adults (mean age = 20.4 years, S.D. = 3.1), were averaged to generate ERPs associated with each paradigm. Components were then extracted using separate temporal PCAs, to enhance the data-driven factorisation of Go and NoGo ERP components, for each task. Correlations were then conducted to examine the temporal and spatial similarity of corresponding components, before MANOVAs were applied to determine how component amplitudes differed between tasks.
Results: A comparable series of Go and NoGo components was identified within each paradigm, with two additional long-latency components linked to non-target processing in the traditional Go/NoGo task. Four early components (i.e., P1, N1-3, N1-1, & PN) in each paradigm, were consistent across conditions, after which processing differed for Go and NoGo stimuli. For Go, PN was followed by P2, N2c, P3b, and two slow wave components (SW1 & SW2). In contrast, the NoGo PN was followed by N2b, P3a, a late P3 (LP3), and a non-target SW1. Component amplitudes also differed significantly between tasks, with the exception of N1-3, NoGo P1, and NoGo N1-1, reflecting shifts in cognitive demands.
Conclusions: These findings illustrate consistent neurocognitive events associated with target and non-target processing in equiprobable and traditional Go/NoGo tasks, bridging the ERP literature between those paradigms. This supports theory development, by providing insight into the effects of stimulus probability on an orthogonal series of ERP components. These findings encourage the generalisation of our PCA-derived processing schema, increasing its utility and potential application in other two-choice paradigms.
Keywords:
Go/Nogo,
PCA,
ERP components,
stimulus probability,
sequential processing
Conference:
ASP2016 - The 26th Annual Meeting of the Australasian Society for Psychophysiology, Adelaide Australia, Adelaide,SA, Australia, 12 Dec - 14 Dec, 2016.
Presentation Type:
Oral Presentation
Topic:
Abstract (student award)
Citation:
Fogarty
JS,
Barry
RJ and
Steiner
GZ
(2016). Sequential Processing in the Traditional Go/NoGo Paradigm.
Conference Abstract:
ASP2016 - The 26th Annual Meeting of the Australasian Society for Psychophysiology, Adelaide Australia.
doi: 10.3389/conf.fnhum.2016.221.00008
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Received:
13 Nov 2016;
Published Online:
05 Dec 2016.
*
Correspondence:
Mr. Jack S Fogarty, University of Wollongong, School of Psychology, Wollongong, Australia, jf752@uowmail.edu.au