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J Exp Psychol Hum Percept Perform. 1994 Feb;20(1):95-107.

Stimulus-driven attentional capture: evidence from equiluminant visual objects.

Author information

1
Department of Psychology, Johns Hopkins University, Baltimore, Maryland 21218.

Abstract

Previous work has shown that abrupt visual onsets capture attention. Possible attention. Possible mechanisms for this phenomenon include (a) a luminance-change detection system and (b) a mechanism that detects the appearance of new perceptual objects. Experiments 1 and 2 revealed that attention is captured in visual search by the appearance of a new perceptual object even when the object is equiluminant with its background and thus exhibits no luminance change when it appears. Experiment 3 showed that a highly salient luminance increment alone is not sufficient to capture attention. These findings suggest that attentional capture is mediated by a mechanism that detects the appearance of new perceptual objects.

PMID:
8133227
[Indexed for MEDLINE]

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