PSYC 385 Lecture Notes - Lecture 8: Non-Rapid Eye Movement Sleep, Sleep Debt, Crepuscular
Document Summary
It"s not always possible or convenient to measure animal"s eeg: so how to figure out if animal is sleeping, characteristic behaviors, postures, physiological, hr, breathing, behavioral, decreased responsiveness to stimulation. Immobility: only a true sleep state sleep debt. 3(+) theories of the why" of sleep: 1. Restorative theory: most active at dawn/dusk, sleep allows repair of cellular components, 2. Brain efficiency theory: sleep allows consolidation of learning and forming memories (perhaps rem especially important, 3. Energy conservation theory: sleep saves energy (well, nrem does, a little) Unique specializations in animal kingdom: large herbivores- sleep eeg and w one or both eyes open, birds- unihemispheric sws at times. Left and right hemispheres takes turns sleeping (synchronized eeg in one, Continue swimming- to maintain body temp, need to come to surface periodically for desynchronized in the other) oxygen, scan for threats. Night watch in one brain hemisphere during sleep associated with the first-night effect in.
