Mod 22-25 Flashcards
consciousness
our subjective awareness of ourselves and our environment
sleep
periodic, natural loss of consciousness–as distinct from unconsciousness resulting from a coma, general anesthesia, or hibernation
circadian rhythm
the biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24-hour cycle
alpha waves
the relatively slow brain waves of a relaxed, awake state
NREM sleep
non-rapid eye movement sleep; encompasses all sleep stages except for REM sleep
REM sleep
Rapid eye movement sleep, a recurring sleep stage during which vivid dreams commonly occur.
halucinations
false sensory experiences, such as seeing something in the absence of an external visual stimulus
hypnagogic sensations
bizarre experiences, such as jerking or a feeling of falling or floating weightlessly, while transitioning to sleep
delta waves
the large, slow brain waves associated with deep sleep
Suprahiasmatic Nucleus (SCN)
a pair of cell clusters in the hypothalamus that controls circadian rhythm.
Insomnia
Recurring problems in either falling or staying asleep
Narcolepsy
A sleep disorder characterized by uncontrollable sleep attacks
Sleep Apnea
A sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentry awakenings.
Night Terrors
A sleep disorder characterized by high arousal and an appearance of being terrified. Occur during NRM3
Dreams
A sequence of images, emotions and thoughts passing through a sleeping person’s mind