PSYCH 230 Lecture Notes - Lecture 9: Central Nervous System, Dura Mater, Pia Mater
Document Summary
Outline: anatomical terms and divisions, afferents and efferents, internal structures, hindbrain, midbrain, lower forebrain, upper forebrain, brain evolution, encephalization and brain size. Symmetry: mirror image: left and right joined by corpus callosum, bundle in the middle connecting the two hemispheres, left and right are mirror images of each other. Influences brain: sensory systems are mostly dorsal, motor systems are mostly ventral, damage to one side can results in loss of one set of outputs. Inferior colliculus: hearing (torus semicircularis, ancient evolutionary component, substantia nigra, black crescent, black substance melanin gives the black color to these neurons, dopamine synthesized here. Imbedded in ventral half midbrain: tegmentum, ventral half of midbrain, dopamine here as well. Important in reward and motivation: red nucleus. Important in movement: lower forebrain, thalamus, biggest part, central chamber, sensory relay, vision, hearing, touch, pain, taste, have their own part of the thalamus.
