NBB 201 Lecture Notes - Lecture 5: Allocortex, Limbic System, Endocrine System
9 Dec 2016
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Nbb 201 lecture 5- evolution of neural and endocrine systems. Phylogeny= first level of explaining animal behavior. Neodarwinian processes are made to maximize survival and ability to reproduce. Behavior of organisms changes the environment of the animals (acts as a pacemaker for evolution) C elegans have a small genetic code, number of cells and neurons and each can be mapped out. Sea slug is used to model neurogenetics, learning and hormones/ behavior. As brain expanded the brain began to fold to allow more surface area for neocortical sheet without exceeding available space in the skull. Pyramidal cells are at the center of the brain to allow maximum connectivity. Reptilian brain: designed to hunt, drink, eat, fight, defend territory, find mates and reproduce, build nests and defend them, have much smaller brains than humans. Paleo-mammalian brain: added the capacity for emotion, relationships and learning to the reptile brain, generally a larger part of the brains of smaller mammals.
