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Percept Psychophys. 2005 Jul;67(5):749-58.

Variation in cue duration reveals top-down modulation of involuntary orienting to uninformative symbolic cues.

Author information

1
Department of Psychology, University of Notre Dame, Notre Dame, IN 46556, USA. bgibson@nd.edu

Abstract

This article reports three experiments in which the effects of cue duration on involuntary orienting to uninformative symbolic cues (arrows presented at fixation) were investigated. Experiment 1 showed that symbolic cues had less effect on involuntary orienting when they were presented for only 25 msec than when they were presented for 200 msec across a range of stimulus onset asynchronies. Experiment 2 suggested that the effect of cue duration on involuntary orienting was due primarily to top-down strategic factors, rather than to bottom-up stimulus factors, and Experiment 3 suggested that these strategic factors may involve differences in how the cue is processed. Altogether, the present findings are important because they emphasize the distinction between cue processing and the putative involuntary orienting that results from such processing in the symbolic-cuing paradigm. In so doing, the present results help resolve discrepant findings that have been reported across previous studies.

PMID:
16334049
[Indexed for MEDLINE]

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