vigilambulism

An older term for a condition of unconsciously regarding one's surroundings, with automatism; resembling somnambulism but occurring in the waking state. [L. vigil, awake, alert, + ambulo, to walk about]

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vig·il·am·bu·lism (vij″il-amґbu-liz-əm) an ambulatory automatism resembling somnambulism but occurring in the waking state.