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Investigating Motor Skill Learning Processes with a Robotic Manipulandum

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Published on: February 12, 2017

Contribution of explicit processes to reinforcement-based motor learning.

Peter Holland¹, Olivier Codol¹, Joseph M Galea¹

¹School of Psychology, University of Birmingham , Birmingham , United Kingdom.

Journal of Neurophysiology

|March 15, 2018

Summary

Reward-based motor learning heavily relies on explicit strategies, not implicit ones. This learning is easily disrupted by secondary tasks, impacting its therapeutic use.

Keywords:

motor learning reward strategies visuomotor adaptation

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Area of Science:

Motor control and learning
Neuroscience
Cognitive psychology

Background:

The precise mechanisms of reward in motor learning are not fully understood.
The specific contribution of explicit processes to reward-based motor learning requires clarification.

Purpose of the Study:

To investigate the role of explicit processes in visuomotor adaptation using only reward feedback.
To determine the impact of cognitive load on reward-based motor learning.

Main Methods:

Subjects learned to adapt to a visuomotor rotation using binary success/failure feedback.
A secondary mental rotation task was introduced to assess learning disruption.
Performance was analyzed based on explicit strategy use and error sensitivity.

Main Results:

Successful learning was primarily driven by a large explicit component.
A significant portion of subjects failed to learn, showing decreased error sensitivity.
A secondary mental rotation task completely abolished learning, while a control group showed learning.

Conclusions:

Explicit processes play a critical role in reward-based motor learning.
Reward-based motor learning is highly susceptible to disruption by concurrent cognitive tasks.
Understanding these factors is crucial for developing effective therapeutic motor learning strategies.