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Virtual Prism Adaptation Therapy: Protocol for Validation in Healthy Adults

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Published on: February 12, 2020

Prism adaptation in left-handers.

Gordon M Redding¹, Benjamin Wallace

¹Department of Psychology, Illinois State University, Normal, IL 61790-4620, USA. gredding@ilstu.edu

Attention, Perception & Psychophysics

|May 18, 2011

Summary

Prism adaptation effects in eye-hand coordination are similar for left- and right-handers. However, left-handers show bidirectional proprioceptive aftereffect transfer, unlike right-handers, impacting handedness theories.

Area of Science:

Neuroscience
Human Motor Control
Cognitive Psychology

Background:

Prism adaptation is a well-studied phenomenon in motor control.
Previous research primarily focused on right-handed individuals.
Understanding handedness differences is crucial for a comprehensive theory of motor adaptation.

Purpose of the Study:

To investigate prism adaptation features in left-handers.
To compare adaptation characteristics between left- and right-handers.
To explore the implications for theories of handedness.

Main Methods:

Two experiments involving left-handed participants.
Assessment of prism adaptation during pointing tasks.
Analysis of visual and proprioceptive aftereffects.

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Examination of intermanual transfer of aftereffects.

Main Results:

Rapid adaptation and directional error development observed in both handedness groups.
Aftereffect magnitude varied based on visual feedback timing.
Intermanual transfer of visual aftereffects was dominant-hand specific.
Proprioceptive aftereffect transfer differed between left- and right-handers.

Conclusions:

Prism adaptation shares core features across handedness.
Left-handers exhibit unique bidirectional proprioceptive aftereffect transfer.
Findings contribute to a refined theory of handedness and motor control.