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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
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Peripheral Visual Cues: Their Fate in Processing and Effects on Attention and Temporal-Order Perception
Jan Tünnermann1, Ingrid Scharlau1
1Faculty of Arts and Humanities, Psychology, Paderborn University Paderborn, Germany.
Frontiers in Psychology
|October 22, 2016
Summary
Peripheral visual cues significantly alter temporal-order judgments (TOJs). Our study reveals that both cue-target confusions and attention-based processing speed changes contribute to these shifts in visual perception.
Area of Science:
- Cognitive Psychology
- Visual Perception
- Computational Neuroscience
Background:
- Peripheral visual cues cause substantial shifts in temporal-order judgments (TOJs).
- Prior explanations attribute these shifts solely to attention speeding up stimulus processing (prior entry).
- Observed shifts sometimes exceed what attention alone can explain, suggesting alternative mechanisms.
Purpose of the Study:
- To investigate the role of cue-target perceptual confusions as an alternative explanation for cue-induced shifts in TOJs.
- To quantify the contributions of cue-target confusions and cue-induced processing rate changes to TOJ psychometric functions.
- To test a novel model of cued TOJs derived from Bundesen's Theory of Visual Attention.
Main Methods:
- Application of a novel computational model for cued temporal-order judgments.
- Derivation of the model from Bundesen's Theory of Visual Attention.
- Analysis of psychometric function shifts under varying cueing conditions.
Main Results:
- Cue-target confusions were found to contribute significantly to the observed shifts in psychometric functions.
- Cue-induced changes in target processing rates also play a crucial role.
- At short cueing intervals, cues enhanced target processing speed; at longer intervals, inhibition of return predominated.
Conclusions:
- Both perceptual confusions and attention-mediated processing speed changes underlie cue-induced shifts in temporal-order judgments.
- Previous studies may have underestimated these effects due to the combined influence of confusions and processing changes.
- The novel model successfully accounts for the complex interplay of factors influencing cued TOJs.
Keywords:
cueingperipheral cueprior entryprocessing speedstimulus encodingtemporal-order judgementstheory of visual attention (TVA)More Related Videos
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