NREM sleep

nonrapid-eye-movement sleep: four sleep stages in which there is an absence of rapid eye movement (REM) and dreams are relatively uncommon (and usually cannot be recalled upon awakening). The increasing appearance of delta waves, particularly in stages 3 and 4, is another prominent index of NREM sleep. Also called non-REM sleep; synchronized sleep. Compare REM sleep.

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

December 30th 2024

neurofibril

n. a fine fiber found in the cytoplasm of a neuron. It is composed of microscopic protein filaments and microtubules. Abnormal formation of neurofibrils leads to the development of neurofibrillary tangles, which are characteristic of Alzheimer’s disease. Also called neural fibril.