States of Mind Terms Flashcards
frequency
the number of complete wavelengths that pass a point in a given time
wave
a disturbance that transfers energy from one place to another
consciousness
our awareness of ourselves and our environment
gamma
continuous in nearly all brain states; denotes heightened cognitive processing related to perception, learning, and problem solving (32-100 Hz)
beta
awake, alert consciousness, thinking analytically (13-32 Hz)
alpha
associated with physical and mental relaxation and with light/N1 and REM sleep (8-13 Hz)
theta
associated with creativity, insight, deep states, deep meditation, reduced consciousness, N2 sleep; can be enhanced by repetitive activities like running (4-8 Hz)
delta
deep sleep; loss of bodily awareness; repair
electroencephalograph
EEG, measures the brain’s electrical activity
sleep hypnogram
graph that represents the stages of sleep as a function of time
sleep cycle
typically 90-minutes long; 4-5 per night; identified by brain-wave patterns and behavioral changes
circadian rhythm
the biological clock; regular bodily rhythms that occur on a 24-hour cycle
REM
paradoxical sleep because it is associated with alpha waves typical of wakefulness; vivid dreams; motor cortex is very active but the brain stem is blocking messages so you’re not moving
non-REM 1
light sleep; characterized by alpha & theta waves
non-REM 2
characterized by theta waves; includes sleep spindles and k-complexes which indicate brief bursts of activity