PSY100Y5 Chapter Notes - Chapter 3: Magnetic Resonance Imaging, Transcranial Magnetic Stimulation, Peripheral Nervous System

• School: UTM
• Department: Psychology
• Course: PSY100Y5
• Professor: Dax Urbszat

Document Summary

Your nervous system is a complex communication network in which signals are constantly being transmitted, received, and integrated (handles the info: nervous tissue: the basic hardware. Each individual branch is a dendrite (are parts of a neuron that are specialized to receive info. Most dendrites receive info from many other cells: axon a long, thin fibre that transmits signals away from the soma to other neurons or to muscles or glands. May branch off to communicate with # of other cells. Humans: many axons are wrapped in cells with high concentration of white, fatty substance myelin. 10-1: functions: supply nourishment to neurons, help remove neurons" waste products, and provide insulation around many axons. Difference in flow rates leads to slightly higher concentration of charged ions inside cell. Result: neuron can"t fire: some time is needed before they open again, absolute refractory period minimum length of time after an action potential during which another action potential can"t begin.