PSB-2000 Chapter Notes - Chapter 9: Delta Wave, Orexin, Occipital Lobe
Document Summary
B. c is insensitive to majority forms of interferences: Main control of circadian rhythms for sleep and temperature. It depends from inputs sent from the back of the eye receptors. Neurons of scn in culture are able to maintain circadian rhythms. Melatonin is involved in regulation of circadian rhythms. Internal desynchronization: state in which b. c. are not in phase with one another. Examples: flying across different time zones or during changes in labor shifts. Vegetable state: alternation between sleep and moderate arousal. Lack purposeful activity, some however, display cognitive activity. Brain death: absences of indexes of brain activity and responses to stimuli. You may dream in other stages, but they"re less vivid and shorter. When it increases in activity, it strengthens storage of recent memories, and increases wakefulness. In the forebrain the release of orexin stimulates neurons that allow to stay awake (but not necessarily to wake). Hypothalamus (releases orexin) forebrain & others (receive orexin, becomes active) allow to stay awake.
