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Related Experiment Video

Updated: Feb 3, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

Vision facilitates tactile perception when grasping an object.

Georgiana Juravle^1,2, Francisco L Colino³, Xhino Meleqi⁴

¹Integrative Multisensory Perception Action & Cognition Team - ImpAct, Lyon Neuroscience Research Center, INSERM U1028, CNRS U5292, Lyon, France. georgiana.juravle@inserm.fr.

Scientific Reports

|October 25, 2018

Summary

This summary is machine-generated.

Tactile sensitivity decreases during hand movement, a process called tactile suppression. Visual information, especially before grasping, significantly modulates this touch sensitivity for both moving and resting hands.

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Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

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Published on: April 21, 2023

Area of Science:

Neuroscience
Human motor control
Sensory perception

Background:

Tactile sensitivity is reduced in a moving hand (MH) compared to a resting hand (RH), a phenomenon known as tactile suppression.
Visual information influences tactile suppression during goal-directed actions, but its precise timing, particularly before object contact, remains unclear for reach-to-grasp movements.

Purpose of the Study:

To investigate the temporal dynamics of visual information's influence on tactile sensitivity during reach-to-grasp actions.
To determine how visual input modulates tactile suppression in both moving and resting hands at critical stages of object interaction.

Main Methods:

Participants performed reach-to-grasp-and-lift tasks under full or limited vision conditions.
Tactile perception was quantified using signal detection theory (d' and c') with electro-cutaneous stimulation applied to the moving or resting hand at various movement phases.
Stimulation occurred during movement preparation, execution, pre-grasp, or object-lift phases.

Main Results:

Tactile gating was confirmed for the moving hand (MH), accompanied by a conservative criterion shift in later movement stages.
Visual information significantly enhanced MH tactile sensitivity just prior to grasping.
Visual input also improved resting hand (RH) tactile sensitivity during the object-lift phase.

Conclusions:

Tactile suppression is dynamically shaped by visual inputs at critical moments during action execution.
The modulatory effect of vision on touch extends beyond the moving hand, indicating a broader visual-tactile integration for monitoring the grasp space.