F/M amplitude ratios, F duration and F frequency of appearance and the presence of abnormal muscle response (AMR) were compared with the asymptomatic side of the face which served as a control group.Results: Enhancement of F-wave parameters were observed on the spasm side and AMR was present in all cases on the spasm side whereas it was absent on the other side.Conclusions: Electrophysiological findings suggest the hyperexcitability of facial motor nucleus in hemifacial spasm.Key Words: Hemifacial spasm, F-wave,hyperexcitability, Facial motor nucleus.
📌 3 Key Takeaways
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Objective & Hypothesis:Objective: The aim of this study was to investigate the mechanism of hemifacial spasm pathophysiologically.Methods: Patients with hemifacial spasm underwent an electrophysiological study of F-wave parameters of the facial nerves on the spasm side.
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Key Findings & Data:Objective: The aim of this study was to investigate the mechanism of hemifacial spasm pathophysiologically.Methods: Patients with hemifacial spasm underwent an electrophysiological study of F-wave parameters of the facial nerves on the spasm side.
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Conclusion & Impact:F/M amplitude ratios, F duration and F frequency of appearance and the presence of abnormal muscle response (AMR) were compared with the asymptomatic side of the face which served as a control group.Results: Enhancement of F-wave parameters were observed on the spasm side and AMR was present in all cases on the spasm side whereas it was absent on the other side.Conclusions: Electrophysiological findings suggest the hyperexcitability of facial motor nucleus in hemifacial spasm.Key Words: Hemifacial spasm, F-wave,hyperexcitability, Facial motor nucleus.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters
Abstract
Objective: The aim of this study was to investigate the mechanism of hemifacial spasm pathophysiologically.Methods: Patients with hemifacial spasm underwent an electrophysiological study of F-wave parameters of the facial nerves on the spasm side. F/M amplitude ratios, F duration and F frequency of appearance and the presence of abnormal muscle response (AMR) were compared with the asymptomatic side of the face which served as a control group.Results: Enhancement of F-wave parameters were observed on the spasm side and AMR was present in all cases on the spasm side whereas it was absent on the other side.Conclusions: Electrophysiological findings suggest the hyperexcitability of facial motor nucleus in hemifacial spasm.Key Words: Hemifacial spasm, F-wave,hyperexcitability, Facial motor nucleus.
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Cite This Article
Tanrıdağ, T., Günal, D. İ., Karagöz, E., Aktan, S. (2016). ELECTROPHYSIOLOGICAL INVESTIGATION OF HEMIFACIAL SPASM : F-WAVES AND ABNORMAL MUSCLE RESPONSES. Marmara Medical Journal, Cilt: 12 - Sayı: 2, 79–81. https://ajindex.com/articles/688747
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