Markand O N, Garg B P, Weaver D D
Arch Neurol. 1984 Jan;41(1):71-4. doi: 10.1001/archneur.1984.04050130077028.
Six affected members from a family of 15 patients with familial startle disease (hyperexplexia) underwent extensive electrophysiologic evaluation. The most marked abnormality consisted of prominent C response 60 to 75 ms after median and peroneal nerve stimulation. The somatosensory evoked responses were also relatively high in amplitude. These findings suggest that hyperactive long-loop reflexes may constitute the physiologic basis of startle disease.
