PSYCH 1XX3 Lecture Notes - Lecture 3: Cardiac Output, Oscilloscope, Inhibitory Postsynaptic Potential
20 Apr 2018
School
Department
Course
Professor
Document Summary
Unit 1: introduction to the neural control of behaviour. Cortical neuron can have 1-10000 connections w other neurons. Separate mental processes of mind from physical processes of brain. Dualist framework - mind separate entity outside of biology but controls thoughts and actions. Zones of neurons: receptive zone (receive signals) and transmission zone (pass signals) Receptive zone - dendrites and cell body. Transmission zone - axon, axon ends and terminal ends/boutons (the tips) Glial cells - provide structural support, nourishment, and insulation to neurons (on axon, between neurons. Electrical imbalance btwn inside and outside of cell at baseline. Resting potential of neuron: -70mv relative to outside of cell (fluctuates) Proteins & potassium ions in neuron, chloride & sodium ions outside. Proteins & chloride ions are negatively charged. Proteins too big to pass through membrane. Sodium and potassium ions are positively charged. Two types of potassium channels: leaky and voltage gated. Leaky potassium channel is always open potassium goes out of neuron.
