U4 AOS1 Dot Point 2 and 4 Flashcards
EEG
electroencephalograph - DARE brain wave patterns
EOG
electro-ocular graph - DARE eye muscle movement
high activity in REM
EMG
electromyograph - DARE muscles
completely relaxed during deep sleep
may spasm in light sleep
DARE
detects amplifies and records electrical activity
4 types of brain waves form most to least alert
beta
alpha
theta
delta
beta waves
alert
intense mental activity
during periods of fear
REM sleep
high frequency low amplitude
alpha waves
occurs when awake but physically relaxed
medium to high frequency low amplitude
theta waves
first falling asleep
meditation
medium frequency high amplitude
delta waves
sleep
predominantly stage 4 NREM
low frequency high amplitude
drug induced ASC - depressant
decrease CNS activity
opiates
alcohol
increased alpha, theta, delta
decreased beta
drug induced ASC - stimulant
increased CNS activity
cocaine
caffeine
ecstacy
increased beta waves
decreased alpha, theta, delta waves