[On amnesic episodes (author's transl)].

Amnesic episodes occur suddenly out of full health and pass off spontaneously after about three to six hours. Consciousness and customary speech and action are maintained during these periods, but powers of acute observation and memory for preceding weeks are lost. But amnesia persists only for the events during the amnesic episode. Temporary and circumscribed ischaemia in the limbic system is thought to be the case. Three case reports are presented to illustrate precipitating circumstances.