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Related Experiment Video

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Movement Retraining using Real-time Feedback of Performance

Movement Retraining using Real-time Feedback of Performance

Published on: January 17, 2013

Automatic movement error detection and correction processes in reaching movements.

Julien Brière¹, Luc Proteau

¹Département de kinésiologie, Université de Montréal, PO Box 6128, Downtown Station, Montreal, QC H3C 3J7, Canada.

Experimental Brain Research

|October 29, 2010

Summary

Human movement adjustments are automatic. This study shows that rapid, successive visual feedback adjustments do not interfere with manual aiming error correction, suggesting seamless processing of incoming visual information.

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Area of Science:

Motor control
Human sensorimotor adaptation

Background:

Manual aiming movements can be adjusted mid-execution.
Error detection and correction involve automatic and reflexive processing of sensory information.

Purpose of the Study:

To investigate if successive visual feedback alterations affect error detection and correction during manual aiming.
To determine the impact of rapid, sequential movement adjustments on motor control processes.

Main Methods:

A video-aiming task was employed.
Participants initiated aiming movements, with some trials featuring a lateral cursor jump (15 mm) after movement onset.
A second cursor jump, occurring 100 ms later, either canceled or doubled the initial jump.

Main Results:

Participants successfully adjusted their movements to cancel or double the correction in response to the second cursor jump.
Correction latency for both single and double cursor jumps remained consistent.
Corrections for successive jumps integrated smoothly, indicating no interference with visual information processing.

Conclusions:

Automatic error correction processes can adapt to successive, rapid visual feedback changes.
The motor system seamlessly integrates sequential visual perturbations without disrupting ongoing correction mechanisms.
Incoming visual information is processed efficiently during continuous motor adjustments.