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A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

Motor commands induce time compression for tactile stimuli.

Alice Tomassini¹, Monica Gori², Gabriel Baud-Bovy³

¹Department of Robotics, Brain and Cognitive Sciences, Istituto Italiano di Tecnologia, 16163 Genova, Italy, alice.tomassini@iit.it.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|July 4, 2014

Summary

Hand movements compress perceived time for tactile signals, similar to visual saccades. This time compression is specific to the moving limb, suggesting a common sensory stability mechanism.

Keywords:

action sensory-motor time perception touch

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A Tactile Automated Passive-Finger Stimulator TAPS

A Tactile Automated Passive-Finger Stimulator TAPS

Published on: June 3, 2009

Area of Science:

Neuroscience
Sensory Perception
Motor Control

Background:

Saccadic eye movements compress visual space and time, aiding perceptual stability.
Tactile stimuli are mislocalized during hand movements, suggesting similar spatial distortions.

Purpose of the Study:

To investigate if hand movements alter the perceived timing of tactile signals.
To determine if time compression occurs during limb movement, analogous to visual saccades.

Main Methods:

Human participants compared temporal separations of tactile tap pairs.
Tactile stimuli were delivered to a moving right hand and a stationary left hand.
Stimuli timing was varied relative to the hand movement onset.

Main Results:

Perceived temporal separation of tactile taps was reduced when presented to the moving hand.
Time compression was effector-specific; the stationary hand's perception was accurate.
This indicates a reduction in perceived time intervals during hand movements.

Conclusions:

Hand movements cause a compression of perceived time for tactile stimuli.
This temporal distortion is effector-specific, supporting a role in maintaining perceptual stability.
Sensorimotor systems may employ common strategies for stability across different sensory modalities.