Adoption of task-specific sets of visual attention
Publication date
2017-05-09
Document type
Research article
Author
Organisational unit
Publisher
Frontiers Research Foundation
Series or journal
Frontiers in psychology
ISSN
Periodical volume
8
Article ID
687
Peer-reviewed
✅
Part of the university bibliography
✅
Language
English
Abstract
Evidence from behavioral and physiological studies suggests attentional weighting of stimulus information from different sources, according to task demands. We investigated the adoption of task-specific attentional sets by administering a flanker task, which required responding to a centrally presented letter while ignoring two adjacent letters, and a same-different judgment task, which required a homogenous/heterogeneous classification concerning the complete three-letter string. To assess the distribution of attentional weights across the letter locations we intermixed trials of a visual search task, in which a target stimulus occurred randomly in any of these locations. Search task reaction times displayed a stronger center-to periphery gradient, indicating focusing of visual attention on the central location, when the search task was intermixed into blocks of trials of the flanker task than into blocks of trials of the same-different task (Experiment 1) and when a cue indicated the likely occurrence of the flanker task as compared to the likely occurrence the same-different task (Experiment 2). These findings demonstrate flexible adoption of task-specific sets of visual attention that can be implemented during preparation. In addition, responses in the intermixed search task trials were faster and (marginally significantly) more error-prone after preparation for a (letter) task repetition than for a task switch, suggesting that response caution is reduced during preparation for a task repetition.
Cite as
Wendt M, Kähler ST, Luna-Rodriguez A and Jacobsen T (2017) Adoption of Task-Specific Sets of Visual Attention. Front. Psychol. 8:687. doi: 10.3389/fpsyg.2017.00687
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Published version
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