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Related Experiment Video

Updated: Jun 24, 2025

Assessing Corticospinal Excitability During Goal-Directed Reaching Behavior

Assessing Corticospinal Excitability During Goal-Directed Reaching Behavior

Published on: December 2, 2022

Interference underlies attenuation upon relearning in sensorimotor adaptation.

Guy Avraham¹, Richard B Ivry¹

¹Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA.

Biorxiv : the Preprint Server for Biology

|June 10, 2024

Summary

This summary is machine-generated.

Sensorimotor adaptation savings are reduced by interference from prior experiences. Eliminating visual feedback during washout prevents this attenuation, suggesting memory interference impacts relearning.

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Area of Science:

Neuroscience
Motor Control
Cognitive Psychology

Background:

Savings in sensorimotor adaptation, the performance gain upon relearning, is well-documented.
However, implicit sensorimotor adaptation's contribution to savings is attenuated after washout periods.
This attenuation is hypothesized to stem from interference caused by the washout experience.

Purpose of the Study:

To investigate the role of interference from washout blocks in attenuating implicit sensorimotor adaptation during relearning.
To determine if eliminating salient error signals or visual feedback during washout affects savings.
To explore the impact of prior experience with veridical feedback on subsequent adaptation.

Main Methods:

Replication of implicit adaptation attenuation following a washout with salient opposite error signals.
Manipulation of washout conditions: elimination of visual feedback versus gradual perturbation decrease.
Introduction of an extended baseline phase with veridical feedback before adaptation.

Main Results:

Eliminating visual feedback during washout prevented the attenuation of implicit adaptation upon relearning.
Gradually decreasing perturbation during washout did not prevent attenuation.
Extended experience with veridical feedback prior to adaptation robustly attenuated subsequent implicit adaptation in a context-specific manner.

Conclusions:

Memory interference from recent, discrepant action-outcome contingencies significantly impacts the implicit sensorimotor adaptation system.
The washout block's salient error signal is not the sole cause of interference; prior experience with different feedback relationships is critical.
Implicit adaptation is sensitive to context and prior learning history, highlighting the complex interplay of memory and motor recalibration.