Kinesiology 1070A/B Lecture 14: Sleep and Exercise
16 Oct 2018
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When falling asleep hr, respiration rate and body temp decreases. Alpha waves (8-13 cps) appear on an electroencephalogram (eeg) - beta waves are quickest brainwaves. Muscle relaxation but still have some muscle movement/awakeness may cause twitches - hypnic jerks. In eeg profile there are short bursts of rhythmical activity in the 13-16 range known as sleep spindles (mark boundary between perception of semi-consciousness and sleep. This is because most that awake after the appearance of spindles report that they have been asleep (they were unconscious) Very slow brain waves (delta waves: 0. 5-3 cps) - over 50% delta waves. 4 (and 3 i think?) are referred to as slow-wave sleep (sws) stage 1, 2 and 3/4 are non-rem sleep. Sws and non-rem sleep facilitate body restoration processes. Low voltage, mixed frequency eeg in conjunction episodic rem. Sleep progresses in a 4 or 5 regular sleep cycles of non-rem and. First sleep cycle is around 90 minutes and succeeding cycles about.
