TÜLİN TANRIDAĞ, İnce Dilek GÜNAL, Erkan KARAGÖZ, Sevinç AKTAN

7899

Electrophysiological investigation of hemifacial spasm: F-waves and abnormal muscle responses

Anahtar Kelimeler:

Hemifasiyal spazm, Elektromiyografi, Elektrofizyoloji, Elektrikle uyarma, Spazm, Fasiyal sinir, Fasiyal sinir hastalıkları, Sinirsel iletim, Yüz, Sinir sıkışması sendromları, Elektrik iletkenliği, Elektrotanı, Motor nöronlar, Aksiyon potansiyelleri, Yüz kasları

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.
Keywords:

Hemifacial Spasm, Electromyography, Electrophysiology, Electric Stimulation, Spasm, Facial Nerve, Facial Nerve Diseases, Neural Conduction, Face, Nerve Compression Syndromes, Electric Conductivity, Electrodiagnosis, Motor Neurons, Action Potentials, Facial Muscles,

Marmara Medical Journal-Cover
  • ISSN: 1019-1941
  • Yayın Aralığı: 3
  • Başlangıç: 1988
  • Yayıncı: Marmara Üniversitesi
Arşiv
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