PS101, Lec 12: 02/28/2013
Sleep paralysis disorder: Awake and can move your eyes but nothing else.
Sleeping isn’t about consciousness; it’s about unconsciousness
When do we remember our dreams?
If we wake up during it.
It it’s vivid, bizarre, emotionally intense.
If we are not distracted upon awakening.
Rapid eyemovement is an indication of dreaming. REM.
Invention: Electroencephalograph (EEG)
Discovery: Rapid eye movements.
When awakened, most report dreaming.
Compared to NonREM sleep, these dreams were vivid, longer, visual. REM:
Muscle tone suppressed, form of paralysis.
Blind persons, cats raised in darkness have REM.
Sympathetic nervous system (automatic):
* Increased breathing and HR
* Hormonal release
* Engorged genital tissues
* REM behavior disorder (rare): Not sleepwalking. But when you can move around during REM.
Doesn’t want you to act upon your dreams in REM that’s why you get paralyzed.
According to functionalism, REM shouldn’t get you to act upon your dreams.
Measures brain activity using action potentials. Cortex measured most.
Beta: Excited. Awake and alert. 1330 Hz. Small amplitudes, need magnification to see them.
Alpha: Relaxed. Awake and relaxed. People in a coma
When you get more relaxed the frequency of the waves decreases.
Theta: Hallmark for entering sleep.
Delta: Deep sleep.
Combination: mixed brain waves during certain stages of sleep. Stages of sleep can be mixed.
Good midterm questions: Theta is really important. Hallmark of something. About
to fall asleep. Stages of sleep:
Alert wakefulness – beta waves
Just before sleep – alpha