[Fatigability of stapedius muscle in myasthenia]

The fatiguability of m. stupedius was studied in 20 patients with myasthenia and 16 controls determining the reflex of this muscle by means of electroacoustic bridge. In half of the patients group the fatiguability of stapedius muscle was increased and in some cases the reflex threshold of the muscle was raised. The authors suggest continuation of these investigations especially for determination of the clinical importance of these observations.