PSY100H1 Chapter Notes - Chapter 4: Sleep Deprivation
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PSY100H1 Full Course Notes
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People with hemineglect are not aware that part of their visual work is missing conscious experience of outside world turned off in sleep. Invention of electroencephalogram (eeg), a machine that measures the electrical activity of the nervous system, revealed brain working when asleep. When awake: short, high frequency, desynchronized beta waves. When close eyes: brain activity slows down more synchronized, alpha waves. Theta waves, easily aroused, geometric shapes, sensation of falling/limbs are jerking breathing regular, less sensitive, now really asleep, Neuronal workspace model conscious arises as a function of which brain regions are active relationship between consciousness and neural responses in brain o images with houses superimposed on faces. Rem sleep: rapid eye movements occur also called paradoxical sleep some brain neurons, especially in occipital cortex and brainstem, are more active in rem sleep than when awake. Most muscles are paralyzed during rem at same time, body shows signs of arousal in genitals.
