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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Direct versus indirect processing changes the influence of color in natural scene categorization
1Department of Psychology, Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan. otsuka.sachio@f.mbox.nagoya-u.ac.jp
Attention, Perception & Psychophysics
|October 6, 2009
Summary
Color information is crucial for categorizing ignored natural scenes indirectly, but not when scenes are processed directly. Negative priming effects for color scenes highlight this indirect processing distinction.
Area of Science:
- Cognitive psychology
- Visual perception
- Attention studies
Background:
- Negative priming (NP) reveals cognitive processing of ignored stimuli.
- Understanding attentional resource allocation and direct vs. indirect processing is key.
- Natural scenes present complex visual information for categorization.
Purpose of the Study:
- To investigate the role of color in categorizing ignored peripheral natural scenes using negative priming.
- To differentiate the impact of color on direct versus indirect visual processing.
- To examine how attentional load influences the processing of natural scenes.
Main Methods:
- Utilized a negative priming (NP) paradigm with peripheral, ignored natural scene images (color and grayscale).
- Manipulated attentional load (low: set size one, high: set size five) in a central visual search task.
- Measured NP effects to assess indirect processing of peripheral scenes.
Main Results:
- Negative priming was observed for color natural scenes, but not grayscale scenes, regardless of attentional load.
- No effect of color information was found in the central visual search task (direct processing).
- Attentional load did not alter the NP effect for color scenes.
Conclusions:
- Color is critical for indirect object categorization of natural scenes when they are ignored.
- Direct processing of natural scenes does not benefit from color information for categorization.
- The processing pathway (direct vs. indirect) determines the contribution of color to scene categorization.
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