Find over 25,000 psychological definitions


gustatory system

the primary structures and processes involved in an organism’s detection of and responses to gustatory stimuli. The gustatory system includes lingual papillae, taste buds and taste cells, taste transduction, neural impulses and pathways (see greater superficial petrosal nerve), and associated brain areas and their functions (see taste cortex; solitary nucleus; thalamic taste area). The responses of this system can be modified to an extent by an organism’s physiology, its immediate needs, and its experiences. Also called taste system.

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

May 26th 2024

metachromatic leukodystrophy

metachromatic leukodystrophy

an autosomal recessive disorder (see recessive allele) characterized by deficiency or absence of the enzyme arylsulfatase A, which results in loss of myelin in the nervous system and accumulation of cerebroside sulfate (a type of myelin lipid) within the white matter of the central nervous system. Loss of motor function and deterioration in mental ability most commonly develop after the 1st year of life (late infantile form), but symptoms may also appear between 3 and 10 years of age (juvenile form) or around age 30 (adult form).