Find over 25,000 psychological definitions


arcuate nucleus

1. an arc-shaped collection of neurons in the hypothalamus that produce hormones.

2. any of various small groups of gray matter on the bulge of the medulla oblongata. They are extensions of neurons in the basal pons and project to the cerebellum.

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

February 20th 2025

tickle experience

tickle experience

a sensation produced by impulses from adjacent skin receptors that are stimulated lightly in rapid succession. It is assumed that the receptors involved are also responsible for the sensations of itch and pain and that the method of stimulation accounts for the different sensations.