The attentional blink with targets in different spatial locations

When two targets (T1 and T2) are displayed in rapid succession, accuracy of T2 identification varies as a function of the temporal lag between the targets (attentional blink, AB). In some studies, performance has been found to be most impaired at Lag 1--namely, when T2 followed T1 directly. In other...

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Bibliographic Details
Published in:Psychonomic bulletin & review 1999-09, Vol.6 (3), p.432-436
Main Authors: Visser, T A, Zuvic, S M, Bischof, W F, Di Lollo, V
Format: Article
Language:English
Subjects:
Analysis of Variance
Attention
British Columbia
Fixation, Ocular
Humans
Sensory Thresholds
Time Factors
Visual Perception
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Summary:When two targets (T1 and T2) are displayed in rapid succession, accuracy of T2 identification varies as a function of the temporal lag between the targets (attentional blink, AB). In some studies, performance has been found to be most impaired at Lag 1--namely, when T2 followed T1 directly. In other studies, T2 performance at Lag 1 has been virtually unimpaired (Lag 1 sparing). In the present work, we examined how Lag 1 sparing is affected by attentional switches between targets displayed in the same location or in different locations. We found that Lag 1 sparing does not occur when a spatial shift is required between T1 and T2. This suggests that attention cannot be switched to a new location while the system is busy processing another stimulus. The results are explained by a modified version of an attentional gating model (Chun & Potter, 1995; Shapiro & Raymond, 1994).
ISSN:1069-9384
1531-5320
DOI:10.3758/BF03210831