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Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another

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Published on: September 18, 2017

Generalization patterns for reach adaptation and proprioceptive recalibration differ after visuomotor learning.

Erin K Cressman¹, Denise Y P Henriques²

¹School of Human Kinetics, University of Ottawa, Ottawa, Ontario, Canada;

Journal of Neurophysiology

|May 15, 2015

Summary

Visuomotor learning recalibrates the sense of hand position, and this recalibration generalizes to new locations independently of reach adaptation. These findings suggest separate error signals for motor and sensory system adjustments.

Keywords:

altered visual feedback generalization proprioception reach adaptation recalibration

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Area of Science:

Neuroscience
Motor Control
Sensory Perception

Background:

Visuomotor learning modifies both motor and sensory systems, adapting reaches and recalibrating the sense of hand position.
Motor adaptation in visuomotor learning demonstrates generalization to novel reach targets.
The generalization patterns of sensory recalibration remain less understood.

Purpose of the Study:

To investigate if proprioceptive recalibration generalizes to novel locations.
To determine the relationship between reach adaptation and changes in the sense of hand position.
To compare the generalization of proprioceptive recalibration with that of reach adaptation.

Main Methods:

Subjects performed reaching movements with altered visual feedback (rotation or scaling).
Generalization of reach adaptation was assessed by reaching to trained and novel targets without visual feedback.
Proprioceptive recalibration was measured using a task where subjects indicated their hand position relative to visual markers.

Main Results:

Proprioceptive shifts generalized to novel locations, irrespective of reach adaptation.
Reach adaptation and proprioceptive recalibration exhibited distinct generalization patterns.
These distinct patterns suggest independent error signals driving sensory and motor adjustments.

Conclusions:

Proprioceptive recalibration generalizes independently of motor adaptation.
Visuomotor learning involves distinct mechanisms for motor and sensory system updates.
Changes in one system (motor or sensory) do not necessarily guide adjustments in the other.