“[T]he law, like everyday thought, usually confines the notion of involuntary to that subclass of cases which involve purely physical, physiological, or psychological movements of our limbs, like reflexes and convulsions, movements in sleep, during sleepwalking, or under hypnosis, or due to some disease of the brain, lunacy, or automatism.” Alan R. White, Grounds of Liability 60–61 (1985).
involuntary
involuntary, adj. Not resulting from a free and unrestrained choice; not subject to control by the will. — involuntariness, n.