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Motor control: Muted motor prioritization in stuttering
1Department of Diagnostic and Interventional Neuroradiology, University Medical Center Göttingen, 37075 Göttingen, Germany.
Current Biology : CB
|August 3, 2026
Summary
Brain rhythms over the sensorimotor cortex track hand action plan prioritization. This brain activity is less prioritized in individuals who stutter, indicating altered motor control dynamics.
Area of Science:
- Neuroscience
- Motor Control
- Speech Science
Background:
- Mu/beta rhythms over the sensorimotor cortex are known indicators of motor control.
- Understanding the neural dynamics of action planning is crucial for motor control research.
Purpose of the Study:
- To investigate how sensorimotor cortex rhythms (mu/beta) reflect the dynamic prioritization of hand action plans over time.
- To examine if these neural dynamics differ in individuals who stutter.
Main Methods:
- Utilized electroencephalography (EEG) to measure mu/beta rhythms over the sensorimotor cortex.
- Analyzed neural activity during tasks involving shifting hand action plans.
Main Results:
- Mu/beta rhythms successfully tracked the temporal shifts in hand action plan prioritization.
- Individuals who stutter exhibited weaker tracking of action plan prioritization compared to controls.
Conclusions:
- Sensorimotor cortex mu/beta rhythms are sensitive to the dynamic allocation of cognitive resources for motor planning.
- Altered prioritization dynamics in individuals who stutter may contribute to speech disfluencies.
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