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Updated: Jun 20, 2026
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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Color-selective attention need not be mediated by spatial attention.
Søren K Andersen1, Matthias M Müller, Steven A Hillyard
1Psychologie & Methodenlehre, Institut für Psychologie I, Universität Leipzig, Leipzig, Germany. andersen@rz.uni-leipzig.de
Journal of Vision
|September 19, 2009
Summary
Feature-selective attention enhances processing of attended items without spatial selection. This sensory gain occurs at early visual cortex levels, demonstrating attention
Area of Science:
- Cognitive Neuroscience
- Visual Attention Research
Background:
- Attention selects stimuli based on non-spatial features like color and orientation.
- Debate exists on whether feature-selective attention boosts signal strength or guides spatial attention.
Purpose of the Study:
- To investigate if feature-selective attention operates independently of spatial selection.
- To determine the neural mechanisms of feature-based attention.
Main Methods:
- A visual task with rapidly changing, intermingled colored dots.
- Participants detected luminance changes in a specific color.
- Behavioral and electrophysiological (steady-state visual evoked potentials) measures were used.
Main Results:
- Selective enhancement of processing for attended-color items was observed.
- Results indicate sensory gain enhancement at early visual cortex levels.
- This enhancement occurred without spatial attention mediation.
Conclusions:
- Feature-selective attention can enhance sensory processing independently of spatial location.
- Evidence supports a sensory gain mechanism in early visual processing.
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