Open English Wordnet
Nouns
(n)subception, subliminal perception(psychology) perception of or reaction to a stimulus that occurs without awareness or consciousness.“Subliminal perception or cognition is a subset of unconscious cognition where the forms of unconscious cognition also include attending to one signal in a noisy environment while unconsciously keeping track of other signals (e.g one voice out of many in a crowded room) and tasks done automatically (e.g. driving a car).”