NROB60H3 Study Guide - Midterm Guide: Golgi'S Method, Neuron Doctrine, Nissl Body
21 Oct 2015
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Head specialized for sensing environment (organ for sensation) = soft cerebrum: receive sensation (to form memories, sensations must be imprinted in soft), hard cerebellum: command muscles. Ventricles in brain were full of fluid (humours) that controlled movement. Descartes believed mind = spiritual entity that receives sensations and commands movements by communicating with the machinery of the brain via the pineal gland. Other scientists observed two types of brain tissue (gray/white matter) Localization of functions due to the same general pattern of gyri and sulci/fissures. Galvani + bois-reymond showed that muscles can be caused to twitch when nerves are stimulated electrically and that the brain itself can generate electricity displaced notion that nerves communicate with brain via fluid. Bell and magendie concluded that each nerve is a mixture of many wires, some bring info to the brain and spinal cord, and other send info to the muscles (sensory and motor nerve fibers)
