Task-set reconfiguration and perceptual processing: behavioral and electrophysiological evidence

Mackenzie, I. G. and Leuthold, H. (2011) Task-set reconfiguration and perceptual processing: behavioral and electrophysiological evidence. Journal of Experimental Psychology: Human Perception and Performance, 37(4), pp. 1239-1252. (doi: 10.1037/a0022192) (PMID:21500941)

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Publisher's URL: http://dx.doi.org/10.1037/a0022192


Oriet and Jolicœur (2003) proposed that an endogenous task-set reconfiguration process acts as a hard bottleneck during which even early perceptual processing is impossible. We examined this assumption using a psychophysiological approach. Participants were required to switch between magnitude and parity judgment tasks within a predictable task sequence while event-related potentials (ERPs) were recorded. Stimulus contrast and response stimulus interval (RSI) were manipulated. Behavioral data demonstrated typical task switch costs that decreased as RSI increased. However, whereas ERP analysis of visual ERP component latencies sensitively revealed the contrast effect, a switch-specific postponement of perceptual processing during task-set reconfiguration at short RSIs was not observed. The present findings indicate that the process of task-set reconfiguration does not constitute a hard bottleneck that delays perceptual processing.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Leuthold, Prof Hartmut
Authors: Mackenzie, I. G., and Leuthold, H.
College/School:College of Science and Engineering > School of Psychology
Journal Name:Journal of Experimental Psychology: Human Perception and Performance
Publisher:American Psychological Association
ISSN (Online):1939-1277

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
352721Event related brain potential evidence for timing in face perceptionHartmut LeutholdBiotechnology and Biological Sciences Research Council (BBSRC)S20041Psychology