Find over 25,000 psychological definitions

vestibular sacs

two sacs in the inner ear—the utricle and saccule—that, together with the semicircular canals, comprise the vestibular apparatus (see also vestibular system). The vestibular sacs respond both to gravity to encode information about the head’s orientation and to linear acceleration.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

June 19th 2024



n. in infants, lack of psychomotor response or failure to gain weight or produce purposeful behavior, often thought to be a response to separation from mothers and subsequent institutionalization. See also reactive attachment disorder.