Stapedius Reflex Abnormalities in Multiple Sclerosis

Abstract

Thirteen patients suffering from multiple sclerosis were analyzed by a Madsen ZO 70 electroacoustic bridge connected to an electronystagmograph through an impedance adaptor. Threshold, amplitude, decay and difference limen of intensity (DLI) of the stapedius reflex were examined for the frequencies 500, 1 000, 2 000 and 4 000 Hz. The difference between standard audiometric results and stapedius reflex data stresses the value of reflex measurements in assessing brain stem pathology

Key Words:

• Multiple sclerosis
• Middle ear muscle reflexes
• Difference limen for intensity
• Stapedial reflex threshold
• Stapedial reflex amplitude
• Stapedial reflex decay
• Stapedial reflex DLI