Finals: Sleep Flashcards
describes our awareness of internal and external stimuli.
Consciousness
- is a state marked by relatively low levels of physical activity and reduced sensory awareness that is distinct from periods of rest that occur during wakefulness.
Sleep
is characterized by high levels of sensory awareness, thought, and behavior.
Wakefulness
are internal rhythms of biological activity. A woman’s menstrual cycle is an example of a biological rhythm-a recurring, cyclical pattern of bodily changes.
Biological rhythms
is a biological rhythm that takes place over a period of about 24 hours.
• Ex. heart rate, blood pressure, blood sugar, and body temperature.
circadian rhythm
is the tendency to maintain a balance, or optimal level, within a biological system.
Homeostasis
hormone important for the sleep-wake cycle.
Melatonin
an endocrine structure located inside the brain that releases melatonin.
pineal gland
a collection of symptoms that results from the mismatch between our internal circadian cycles and our environment.
Jet lag
Individuals who do ____ are also likely to experience disruptions in circadian cycles. this has pervasive effects on the lives and experiences of individuals engaged in that kind of work.
rotating shift work
When people have difficulty getting sleep due to their work or the demands of day-to-day life.
sleep debt
refers to the fact that a sleep deprived individual will tend to take a shorter time to fall asleep during subsequent opportunities for sleep.
Sleep rebound
sleep is characterized by darting movements of the eyes under closed eyelids.
Rapid eye movement (REM)
sleep is subdivided into four stages distinguished from each other and from wakefulness by characteristic patterns of brain waves.
Non-REM (NREM)
- phase that occurs between wakefulness and sleep.
Stage 1 sleep