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Human attention filters for single colors.

Peng Sun¹, Charles Chubb², Charles E Wright²

¹Department of Cognitive Sciences, University of California, Irvine, CA 92697; Department of Psychology, New York University, New York, NY 10003; peng.sun@nyu.edu sperling@uci.edu.

Proceedings of the National Academy of Sciences of the United States of America

|October 30, 2016

Summary

Feature-based attention (FBA) uses filters to select visual information. Human perceptual attention filters are highly selective for hue, but less so for saturation or lightness.

Keywords:

centroid estimation color discrimination feature-based attention selective attention

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Area of Science:

Cognitive Psychology
Neuroscience
Visual Perception

Background:

The brain processes vast visual information, necessitating selective attention mechanisms.
Feature-based attention (FBA) acts as a filter, prioritizing attended features and attenuating others.

Purpose of the Study:

To precisely measure human perceptual attention filters using the centroid-judgment paradigm.
To quantify the selectivity of attention filters for different color attributes (hue, saturation, lightness).

Main Methods:

Utilized the centroid-judgment paradigm with a mouse-based task to measure attention filters.
Subjects identified the centroid of a distinguished subset of dots in a cloud.
Analyzed data to determine the precise weight of each color within the judged centroid, defining the attention filter.

Main Results:

Reported 32 attention filters for single colors.
Hue-based attention filters showed extraordinary selectivity (attended/unattended weight ratios >20:1) when discriminating hues.
Saturation and lightness attention filters were less selective than hue filters and their selectivity correlated with color discriminability.

Conclusions:

Human perceptual attention filters exhibit high selectivity, particularly for hue.
The selectivity of attention filters varies depending on the color attribute being attended to.
Attention filter selectivity for saturation and lightness is dependent on color discriminability, unlike hue.