Definitions and concepts related to sleep
Spindle Density Spindle density refers to the number of “spindles” that occur during non-rapid eye movement (NREM) sleep in the brain. Spindles are brief bursts of brain activity that occur during stage 2 of NREM sleep. Research suggests that spindle density is related to a variety of cognitive functions, including memory consolidation, learning, and attention.… Read More »Definitions and concepts related to sleep