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Cross-modal congruency between haptic and visual objects affects involuntary shifts in spatial attention.

Kyuto Uno^1,2, Ryoichi Nakashima^2,3

¹Graduate School of Information Science and Technology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.

|November 4, 2025

Summary

Haptic-visual shape congruency involuntarily shifts spatial attention. This cross-modal influence impacts attentional control, affecting how we process visual information even when not actively searching.

Keywords:

Cross-modal attention congruency effect haptic shape involuntary attentional orienting

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Area of Science:

Cognitive Psychology
Neuroscience
Human-Computer Interaction

Background:

Cross-modal congruency, where input from one sense matches another, influences attention.
Previous studies show semantic congruency aids visual search, impacting goal-directed attention.

Purpose of the Study:

To investigate if haptic input can involuntarily direct spatial attention to congruent visual objects.
To determine if cross-modal shape congruency affects attentional orienting beyond goal-directed control.

Main Methods:

Participants identified visual arrow direction while holding a shaped object.
Task-irrelevant visual stimuli with specific shapes preceded the arrow.
Response times were measured based on the congruency between the held object's shape and the visual stimuli's shape.

Main Results:

A significant interaction between visual and haptic shapes was observed.
Faster responses occurred when the visual object's shape matched the haptically perceived shape.
This indicates haptic-visual shape congruency modulates spatial attention.

Conclusions:

Cross-modal congruency, specifically haptic-visual shape matching, can involuntarily orient spatial attention.
This finding extends beyond goal-directed attentional control, showing broader effects of cross-modal interactions.