Tonic vibration reflex in Holmes-Adie syndrome: an electrophysiological study.
The pathophysiological mechanisms underlying benign areflexia were studied in six patients with Holmes-Adie syndrome. No impairment of sensory conduction velocity of sural nerve was found. A normal tonic vibration reflex was obtained in all patients. H reflex was absent in five patients, but responses like F waves were recorded in three subjects. These findings suggest that muscle spindles are not affected and that spinal motoneurone excitability is normal.
D000270:Adie Syndrome / Q000503:physiopathology*; D000328:Adult; D000368:Aged; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons; D009431:Neural Conduction; D010525:Peripheral Nerves / Q000503:physiopathology; D012021:Reflex, Abnormal / Q000503:physiopathology*; D012023:Reflex, Monosynaptic; D014732:Vibration