CAS PS 101 Lecture Notes - Lecture 7: Ontogeny, Ghostly Encounters, Pyramidal Cell

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Barak Caine

Document Summary

The only reason we need to sleep that is really, really solid is because we get sleepy, w. dement. Nearly all animals sleep e. g. marine mammals and sharks sleep one cerebral hemisphere at a time. Ontogeny and restoration theory morphological development, memory functions, healing, and immune system. Preservation theory sleep to maximize safety. Freud (die tradeutung, 1900) manifest and latent content. Does not say it requires a sexual component correct: relates to our emotional concerns incorrect: thinly disguised wishes and wish fulfillment. Characteristic electrical activity patterns in the eegs of healthy humans: Blind persons, cats raised in darkness have rem. Muscle tone suppressed, a kind of paralysis. Sympathetic nervous system increased breathing and heart rate, hormonal release, engorged genital tissues, and rem behavior disorder (rare) Compared with nrem sleep, vivid, longer, visual. Reflects synchronous activity of millions of neurons. Principally measures activity of pyramidal neurons in cortex. Beta alert, excited, active, working; 13-30 hz.