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This study explores the impact of salient stimuli on the beta frequency band at the muscle level during voluntary isometric contractions. Results showed that auditory stimuli consistently caused an early brief reduction in force immediately followed by longer-lasting increase and a subsequent increase in beta activity in muscle recordings. These findings suggest that auditory events can modulate motor cortical outputs, inducing beta activity that travels through the motor nervous system, offering a practical framework for studying cortical rhythms and potential strategies to modulate them.

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Surface Electromyography Shows Consistent Changes in the Beta Frequency Band After Salient Stimuli

  • 会议论文

  • 发表日期：

    2025年

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  • Blanca Delgado-Bonet,
  • María Sarasquete-Martínez,
  • Dario Farina,
  • Ricci Hannah,
  • Jaime Ibáñez

摘要

This study explores the impact of salient stimuli on the beta frequency band at the muscle level during voluntary isometric contractions. Results showed that auditory stimuli consistently caused an early brief reduction in force immediately followed by longer-lasting increase and a subsequent increase in beta activity in muscle recordings. These findings suggest that auditory events can modulate motor cortical outputs, inducing beta activity that travels through the motor nervous system, offering a practical framework for studying cortical rhythms and potential strategies to modulate them.