Consciousness

Able to perceive one’s thoughts, feelings, sensations, and surroundings

Jet Lag

A temporary disruption of the body's circadian rhythm due to rapid travel across multiple time zones

Shift Work

Employment schedules that require working outside of typical daytime hours, disrupting the circadian rythm

NREM Stage 1

Drifting in and out of sleep

Brain waves slow down muscles relax, and individuals may experience sudden muscle contractions known as hypnic jerks

NREM Stage 2

Light sleep

Brain waves further slow down and sleep spindles (short bursts of brain activity) and k-complexes (sudden, sharp waveforms) appear

NREM Stage 3

The sleepest stage of NREM sleep

Restoration of resources body and brain replenish energy- promoting physical and mental well-being

REM (Rapid Eyelid Movement) Sleep

Rapid eye movement, vivid dreams, and muscle paralysis

Increased brain activity- dreaming- plays a role in memory consolidation and emotional processing

REM Rebound

The phenomenon where the body increases the time spent in REM sleep after a period of REM deprivation

Activation-Synthesis (Dreams)

A theory that dreams result from random neural activity during REM sleep, which is then interpreted and synthesized into a narrative or story

Consolidation Theory (Dreams)

A theory that dreams play a role in the memory consol consolidation and processing of memories. The brain organizes and integrates information acquired throughout the day- memory storage/