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<p>Rhythmic movements mimicking tremor are commonly used as a control condition in tremor physiology studies, yet the influence of different metronome modalities on performance has not been systematically examined. We compared auditory, visual, and combined auditory–visual metronome guidance in terms of frequency accuracy, temporal stability, and persistence following cueing removal to identify a suitable metronome condition for tremor simulation. Nineteen healthy volunteers performed 2&#xa0;Hz thumb abduction–adduction movements under auditory, visual, and combined auditory–visual metronome conditions. Each trial included a 30&#xa0;s metronome-guided phase followed by a 30&#xa0;s post-metronome phase. Surface EMG recordings were analyzed using repeated-measures ANOVA and correlation analyses. Frequency accuracy and temporal stability did not differ significantly between metronome types. However, auditory and combined auditory–visual cueing descriptively showed lower frequency error than visual cueing during metronome guidance. Guided-to-unguided temporal stability correlations were significant for auditory and combined auditory–visual cueing, but not for visual cueing, with combined cueing showing a relatively higher correlation. Although no significant group-level superiority was observed, the overall pattern of findings suggested that the combined auditory–visual metronome may represent a suitable metronome condition for rhythmic movements mimicking tremor. </p>

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Rhythmic movements mimicking tremor under different metronome conditions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月29日

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  • Handan Uzunçakmak-Uyanık,
  • Fatma Gökçem Yıldız,
  • Gül Yalçın-Çakmaklı,
  • Bülent Elibol,
  • Çağrı Mesut Temuçin

摘要

Rhythmic movements mimicking tremor are commonly used as a control condition in tremor physiology studies, yet the influence of different metronome modalities on performance has not been systematically examined. We compared auditory, visual, and combined auditory–visual metronome guidance in terms of frequency accuracy, temporal stability, and persistence following cueing removal to identify a suitable metronome condition for tremor simulation. Nineteen healthy volunteers performed 2 Hz thumb abduction–adduction movements under auditory, visual, and combined auditory–visual metronome conditions. Each trial included a 30 s metronome-guided phase followed by a 30 s post-metronome phase. Surface EMG recordings were analyzed using repeated-measures ANOVA and correlation analyses. Frequency accuracy and temporal stability did not differ significantly between metronome types. However, auditory and combined auditory–visual cueing descriptively showed lower frequency error than visual cueing during metronome guidance. Guided-to-unguided temporal stability correlations were significant for auditory and combined auditory–visual cueing, but not for visual cueing, with combined cueing showing a relatively higher correlation. Although no significant group-level superiority was observed, the overall pattern of findings suggested that the combined auditory–visual metronome may represent a suitable metronome condition for rhythmic movements mimicking tremor.