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Related Experiment Video

Updated: Apr 20, 2026

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

Visuomotor adaptation needs a validation of prediction error by feedback error.

Valérie Gaveau¹, Claude Prablanc², Damien Laurent¹

¹INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center Bron, France.

Frontiers in Human Neuroscience

|November 20, 2014

Summary

Visuomotor adaptation relies on feedback errors, not just prediction errors. Terminal feedback errors are critical for adaptation, suggesting a combination of feedback and prediction is needed for aftereffects.

Keywords:

eye-hand coordination feedback error internal model prediction error prism adaptation unawareness visuomotor adaptation

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Last Updated: Apr 20, 2026

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

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Area of Science:

Neuroscience
Motor Control
Human Factors

Background:

Visuomotor adaptation processes are debated.
Two error sources: feedback and prediction errors, are intertwined.

Purpose of the Study:

Clarify relative contributions of feedback vs. prediction errors in visuomotor adaptation.
Investigate error signals during prism-displaced pointing tasks.

Main Methods:

Two conditions: terminal feedback error and movement prediction error.
Subthreshold, progressive prism deviation to ensure unawareness of visual shift.

Main Results:

Adaptive aftereffect observed only in the terminal feedback error condition.
Prediction error alone was insufficient to induce adaptation when subjects were unaware.

Conclusions:

Hand-to-target feedback error signals play a critical role in visuomotor adaptation.
A combination of feedback and prediction error signals is necessary for aftereffects.
Feedback error updates reafference prediction during gradual visual perturbations.