Midterm 2 Flashcards
What is consciousness?
People’s awareness of everything that is going on around them at any given moment (thoughts, sensations, feelings)
Waking Consciousness
Most of the day is spent in waking consciousness where these are clear and organized
When do altered states of consciousness occur?
When there s a shift in the quality or pattern of mental activity as compared to waking consciousness. Alertness, thought content, and focus can vary greatly.
Can people live without sleep?
Only for a little while but cannot live without it all together.
Amount of sleep needed?
Average 7-9 hours per night but varies per individual and age
Is sleep a biological rhythm?
Yes, it is one of the bodies daily [circadian] biological rhythms.
What is the sleep/wake cycle controlled by?
Controlled by brain including the hypothalamus and serotonin.
What is REM?
Rapid Eye Movement
Stage of sleep where the eyes move rapidly under the eyelids and the person is typically dreaming.
What is nREM or non-REM sleep?
any of the stages of sleep that do not include REM
Seasonal Affective Disorder (SAD) is…
a mood disorder caused by the body’s reaction to low levels of sunlight in the winter months
Beta Waves
Brain waves that indicate a state of being awake and mentally active.
Alpha Waves
Brain waves that indicate a state of relaxation or light sleep
Theta waves
Brain waves indicating the early stages of sleep
Delta Waves
Long, slow waves that indicate the deepest stage of sleep.
Average time of stage 1 sleep?
Approx 10 minutes
Average time of stage 2 sleep?
As long as 20 minutes
Average time of stage 3 sleep?
Approx 30 minutes
Average time of stage 4 sleep?
30 - 40 minutes approx
Average time of REM sleep?
A few minutes to an hour
REM Paralysis
the inability of the voluntary muscles to move during REM sleep
REM Behaviour Disorder
a rare disorder in which the mechanism that blocks the movement of the voluntary muscles fails, allowing the person to thrash around and even get up and act out nightmares
REM rebound
Increased amounts of REM sleep after being deprived of REM sleep on earlier nights
Nightmares
Bad dreams occurring during REM sleep
Somnambulism
Sitting, walking, or performing complex behaviour while asleep