BIOC34H3 Lecture Notes - Lecture 15: Slow-Wave Sleep, Theta Wave, Delta Wave
Document Summary
Lecture 15: sleep/sleep-related breathing disorders: ecg waves. Alpha 10 hz; awake but relaxed (eyes closed) Beta 14-30hz; fully awake, visual stimulation + mental activity. Theta 4-8 hz; slower waves during sleep. Normal person does not have this unless very stressed or day-dreaming. Delta - <4hz; during sleep, pathological if this occurs in an awake person: ecg helps diagnose brain activity during sleep, ecg biofeedback treats add or anxiety disorders. Add not able to concentrate, increase in beta waves by increasing concentration, and decrease in theta waves (daydreaming) Strong synaptic connections (helps w/ memory formation) Enhance immune system: regions in brain involved in producing diff sleep stages: Hypothalamus (pre-optic area) slow-wave sleep generation. Reticular formation regulating wakefulness or arousal: slow-wave sleep, rem sleep, slow-wave sleep- 4 stages, produces low freq ecg waves, decreased muscle tone, decreased brain activity (but high parasympathetic activity), more logical dreams, snoring occurs, rem sleep: Eyes move rapidly following what they see in their dream.
