Related Experiment Video
Updated: Feb 26, 2026
06:31
Force and Position Control in Humans - The Role of Augmented Feedback
Published on: June 19, 2016
8.3K
Representing delayed force feedback as a combination of current and delayed states
Guy Avraham1,2, Firas Mawase3, Amir Karniel4,2
1Department of Biomedical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel; guyavr@post.bgu.ac.il.
Journal of Neurophysiology
|July 21, 2017
Summary
The brain adapts to delayed forces by creating internal models that use both current and past hand movements. This adaptation allows for better control and generalization of movements even with sensory delays.
Area of Science:
- Neuroscience
- Motor Control
- Human Movement Science
Background:
- The brain must compensate for intermodal delays in sensory information to accurately control movements.
- Internal representations are crucial for adapting to force perturbations dependent on hand state.
Purpose of the Study:
- To investigate how the brain represents and adapts to delayed velocity-dependent force fields.
- To understand the neural mechanisms underlying compensation for sensory delays in motor control.
Main Methods:
- Participants performed movements in delayed velocity-dependent force fields (70 or 100 ms delay).
- Internal representations of delayed forces were probed by analyzing applied forces during adaptation and generalization tasks.
Main Results:
- Internal representations incorporated both current hand state (position, velocity) and delayed velocity information.
- Adaptation showed an increasing reliance on delayed representations over time.
- Generalization to faster movements utilized both current and delayed state information.
Conclusions:
- The sensorimotor system forms internal representations that integrate current and delayed sensory feedback.
- These representations are essential for adapting to and generalizing movements in the presence of sensory transmission delays.
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