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Updated: Jun 22, 2026

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

Published on: November 6, 2015

Pointing control using a moving base of support.

Jan M Hondzinski¹, Taegyong Kwon

¹Department of Kinesiology, Louisiana State University, 112 Long Fieldhouse, Baton Rouge, LA 70803, USA. jhondz1@lsu.edu

Experimental Brain Research

|June 23, 2009

Summary

This summary is machine-generated.

Gaze direction guides pointing movements, with trunk rotation aiding orientation. Understanding these factors clarifies endpoint accuracy in goal-directed actions.

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Area of Science:

Motor control
Human movement science
Neuroscience

Background:

Gaze direction's role in movement control is debated.
Previous studies show discrepancies in endpoint accuracy with eccentric gaze.

Purpose of the Study:

Determine if gaze direction signals movement direction in pointing tasks.
Investigate reasons for accuracy discrepancies in eccentric gaze pointing.

Main Methods:

Subjects performed straight-arm pointing to targets.
Movements were made toward or 30 degrees eccentric to gaze.
Conditions included sitting, standing, side-stepping, and varying light.
Trunk rotation contribution to gaze was measured.

Main Results:

Gaze direction influenced variable pointing errors.
Step direction affected systematic errors and trunk orientation.
Trunk rotation accounted for 22-65% of gaze orientation when unconstrained.
Error differences across target locations explained prior experimental discrepancies.

Conclusions:

Gaze direction acts as a control signal for pointing.
Movement control integrates gaze and equilibrium inputs.
Findings resolve discrepancies in prior eccentric gaze pointing literature.