PSYC 1004 Lecture Notes - Lecture 10: Circadian Rhythm, Reticular Formation, Cerebral Cortex
Document Summary
For freud, the unco(cid:374)scious (cid:373)i(cid:374)d is the (cid:373)ajority . Conscious is above the surface of the water-- includes ego mainly. Preconscious mind is like lighter violet- ego, superego. Unconscious mind is the darker-- all the id, some ego and some superego. Why sleep? (functional, evolutionary perspective: we"re tired, it restores us-- our muscles and brain tissue. It"s restorative: keeps us away from trouble/hard, consolidate memories, helps neurons repair. It can aid our immune system: partly because cerebral cortex isn"t busy processing outside information, growth (not on slide) Eeg"s: graphically record brain-wave activity through electrodes on the scalp and forehead, eeg waves vary in amplitude and frequency. Rem sleep looks like awake, but it is a very active brain at the cortex. The stages of sleep occur in cycles through the night. We get a lot of sleep early in the night (stage. In the early morning those are normally the.
