BRAIN SIGNATURE OF SUBJECTIVE PERFORMANCE DURING NUMERICAL STROOP TASKS

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationPSYCHOPHYSIOLOGY
Subtitle of host publicationTHE INTERNATIONAL JOURNAL OF THE SOCIETY FOR PSYCHOPHYSIOLOGICAL RESEARCH
PagesS73
Publication statusPublished - Sept 2019

Publication series

Name
PublisherWiley-Blackwell
NumberS1
Volume56
ISSN (Print)0048-5772
ISSN (electronic)1469-8986

Conference

Title59th Annual Meeting of the Society for Psychophysiological Research
LocationHyatt Regency Hotel on Capitol Hill
PlaceUnited States
CityWashington
Period25 - 29 September 2019

Abstract

In this study, we investigated the resolution of conflict by using the modified version of size-congruity comparison, a Stroop-like task in which numerical value and physical size were varied independently under task-relevant and -irrelevant conditions. In the physical size judgement task, congruent condition elicited a smaller anterior N2 than neutral (facilitation effect) and incongruent conditions; it also showed a greater parietal-distributed LPC than incongruent condition. In the numerical magnitude judgement task, the congruency effect was only significant on the parietal-distributed LPC. We further examined the within-subject relationship between intraindividual variability in behavioral and ERP responses of conflict monitoring. ERPs were back sorted into three bins according to the reaction time of each participant, the upper quantile, the median, and the lower quantile. Among all the trials, congruency effects were observed on parietal-distributed LPC. However, facilitation effects at anterior N2 were only evident for trials with fast RTs but not trials with median and slow RTs across two tasks. The results indicate that task irrelevant features have facilitation and interference effects during multiple processing stages in numerical stroop tasks. The intraindividual variability offers a window to understand the dynamic ranges of strategies that may be continuously employed during the conflict resolution.

Citation Format(s)

BRAIN SIGNATURE OF SUBJECTIVE PERFORMANCE DURING NUMERICAL STROOP TASKS. / Huang, Hsu-Wen; Nascimben, Mauro; Fong, Dong-Yang et al.
PSYCHOPHYSIOLOGY: THE INTERNATIONAL JOURNAL OF THE SOCIETY FOR PSYCHOPHYSIOLOGICAL RESEARCH. 2019. p. S73.

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review