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 Maddede Bu Makale
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Amaç & Hipotez: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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Temel Bulgular & Veri: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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Sonuç & Katkı: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.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri
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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Bu Makaleye Atıf Yap
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
Ishikawa M, Ohira T, Namiki J, et al. Flcctrophysio logical investigation of hemifacial spasm after microvascular decompression: F waves of the facial muscles, blink reflexes, and abnormal muscle responses. J Neurosurg 199 7:86:654-661.
Ishikawa M, Ohira T, Hainiki J, et al. Electrophysio logical investigation of hemifacial spasm: F-waves of the facial muscles. Acta Neurochir 1996;138:24-32.
Ishikawa N, Namiki J, Takase M, et al. Effect of repetitive stimulation on lateral spreads and F- waves in hemifacial spasm. J Neurol Sci;142:99-106.
Zappia JJ, Wiet RJ, Chouan ADO, Zhao JC. Pitfalls in the diagnosis of hemifacial spasm. The Laryngoscope 1997;107:461-465. Rasmnski M. Ephaptic transmission between single nerve fibres in the spinal nerve roots of dystrophicmice J Physiol 1980:30:151-169. Nielsen VK. Pathophysiology of hemifacial spasm: I. Ephaptic transmission and ectopic excitation. Neurology, 1984;34:418-426.
Ishikava M, Ohira T, Namiki J, et al. Abnormal muscle response (lateral spread) and Fwave in patients with hemifacial spasm. J Neurol Sci 1996; 137:109-116.