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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

Delayed auditory feedback and movement.

Peter Q Pfordresher¹, Simone Dalla Bella

¹Department of Psychology, University at Buffalo, Buffalo, NY 14260, USA. pqp@buffalo.edu

Journal of Experimental Psychology. Human Perception and Performance

|April 6, 2011

Summary

Delayed auditory feedback (DAF) disrupts rhythm production, with effects depending on finger movement state. Finger velocity predicts timing changes, while finger position influences timing variability during DAF.

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Area of Science:

Auditory Neuroscience
Motor Control
Human-Computer Interaction

Background:

Auditory feedback is crucial for motor timing.
Delayed auditory feedback (DAF) is known to disrupt rhythm production.
The precise mechanisms linking DAF to timing disruption remain unclear.

Purpose of the Study:

To investigate how the state of the movement trajectory influences disruption by DAF.
To determine if finger position or velocity at DAF onset predicts timing changes.
To explore the relationship between finger trajectory and timing variability under DAF.

Main Methods:

Participants tapped isochronous rhythms with auditory metronome guidance.
Experiment 1 used varying DAF lengths and motion capture for trajectory analysis.
Experiment 2 manipulated finger trajectory parameters to confirm findings.

Main Results:

DAF altered rhythm production, slowing for shorter delays and speeding for longer delays.
Finger velocity at DAF onset predicted changes in mean Inter-Response Intervals (IRIs).
Finger position predicted IRI variability, with trajectory manipulation confirming this link.

Conclusions:

The impact of DAF on rhythm timing is dependent on the ongoing motor trajectory.
Specific kinematic features (velocity and position) differentially mediate DAF effects on timing.
Understanding trajectory-feedback interactions is key to explaining DAF-induced timing disruptions.