BIOLOGY 3UU3 Lecture Notes - Lecture 6: Dream Cycle, Sleep Deprivation, Basal Metabolic Rate
Document Summary
Nuclei of rodent brain: during rem, hypocretin/neurexins is one of the systems that control entry into sleep, also recently found to be associated to waking up. These are also in the hypothalamus, where integration is happening. Many pathways streaming out of the hypocretin, going towards other regions. Differences in brain wave features during different stages of sleep. When you are unconscious, all motor functions inactive. Homeostatic to balance amount of sleep you have. Eeg of sleep in a human adult 4 stages of sleep progressing through stages of sleep, more into deeper sleep, amplitude of waves progressively increases. Growth hormone secretion is in delta wave sleep (stage 4), associated with protein synthesis, cell proliferation, etc. Vertical continuum of human existence: from awake (mania, highly alert, alert, relaxed, etc), transition, asleep (light sleep, rems, etc) Animals can sleep with one side of their brain at a time, i. e. birds. Mallard ducks, sleep with half brain, keep other eye open.