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Updated: Jan 22, 2026
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Published on: August 25, 2020
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Alpha and Beta Corticomotor Phase Dynamics Shape Visuomotor Control on a Single-Trial Basis
Alice Tomassini1,2, Francesco Torricelli2, Luciano Fadiga3,2
1Dipartimento di Neuroscienze e Riabilitazione, Università degli Studi di Ferrara, Ferrara 44121, Italy alice.tomassini@gmail.com.
Summary
Cortico-motor coherence in the alpha band speeds up reactions, while beta-band coherence improves accuracy and reward efficiency during sensorimotor control tasks.
Area of Science:
- Sensorimotor Neuroscience
- Computational Neuroscience
- Systems Neuroscience
Background:
- Understanding sensorimotor integration is crucial for explaining swift and accurate responses to environmental changes.
- Cortico-motor coherence offers insights into the dynamics of sensorimotor loops and online visuomotor control.
Purpose of the Study:
- To investigate the relationship between cortico-motor coherence and online visuomotor control.
- To determine how different frequency bands of neural synchronization influence motor responses during perturbations.
Main Methods:
- Electroencephalography (EEG) and isometric tracking tasks with visual perturbations were used.
- Participants performed tasks requiring online visuomotor control.
- Single-trial analyses examined cortico-motor phase and power relationships.
Main Results:
- Alpha-band coherence correlated with faster motor responses.
- Beta-band coherence was linked to more accurate control and higher reward likelihood.
- Deviations in cortico-motor phase relationship increased reaction times and errors.
Conclusions:
- Frequency-specific cortico-motor coherence plays a distinct role in sensorimotor control.
- Alpha-band coherence supports rapid, reactive control, while beta-band coherence facilitates cautious, reward-efficient control.
- These findings illuminate the spectrotemporal organization of sensorimotor networks for goal-directed behavior.
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