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Updated: Jun 18, 2026

Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention

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Published on: November 16, 2017

Visual field asymmetry in attentional capture.

Feng Du¹, Richard A Abrams

¹Washington University, St. Louis, MO 63130, USA. fdu@artsci.WUSTL.edu

Brain and Cognition

|November 17, 2009

Summary

Involuntary attention capture differs between visual fields. Color-based capture is stronger in the left visual field, while onset-based capture is symmetrical, suggesting distinct brain mechanisms for each.

Area of Science:

Cognitive Neuroscience
Visual Perception
Attention Studies

Background:

Involuntary attentional capture, the automatic redirection of attention by salient stimuli, plays a crucial role in visual processing.
Understanding the spatial distribution of attentional capture across visual hemi-fields is essential for elucidating underlying neural mechanisms.
Previous research has suggested potential asymmetries in visual processing, but the spatial characteristics of different capture types remain debated.

Purpose of the Study:

To investigate the spatial distribution of involuntary attentional capture across the left and right visual hemi-fields.
To differentiate the spatial patterns of color-based contingent capture versus abrupt onset capture.
To explore potential differences in brain mechanisms underlying distinct types of attentional capture.

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Main Methods:

Conducted a new experiment alongside re-analysis of three prior studies.
Measured the magnitude of attentional capture effects for color-matched distractors and abrupt onset distractors.
Compared capture effects between the left and right visual hemi-fields.

Main Results:

Color-based contingent capture showed a significant visual field asymmetry, with a larger capture effect observed for distractors in the left visual field.
Abrupt onset capture demonstrated a symmetric distribution, with no significant difference in capture magnitude between the two visual hemi-fields.
These findings reveal distinct spatial distributions for different types of involuntary attentional capture.

Conclusions:

The observed visual field asymmetry in color-based contingent capture suggests lateralized processing in the brain.
The symmetric distribution of onset capture indicates a more bilateral or centrally mediated mechanism.
The differing spatial patterns highlight fundamental distinctions between contingent and onset-based attentional capture, likely reflecting different neural underpinnings.