[The optic blink reflex: stimulus dependency, excitability and habituation (author's transl)]

Stimulus dependency, excitability and habituation of the flash-induced optic blink reflex were examined by means of an electrooculogram. The results were clearly dependent on the background illumination. In a 30 Lux illuminated room, the blink amplitude and the excitability increased with an increasing stimulus intensity. In a dark room, a low flash intensity was sufficient to produce both high level blink amplitude and excitability which could not be increased by a greater stimulus intensity. The optic blink reflex habituated only very slowly depending on the variability between the stimuli.