PSY372H1 Lecture Notes - Lecture 1: Dentate Gyrus, Memory Consolidation, Myelin
Document Summary
Psy372: chapter 2 - neuroscience of memory (lecture 1) Memory is an emergent property of the nervous system that emerges when the neurons work together. Generally responsible for collecting information: axons: a protruding structure from the soma, used for transmitting information either to other neurons or to other structures such as muscles and glands. Neural communication can be broken into an electrical component and a chemical component: action potential: the electrical component that occurs within a neuron. When a neuron is sufficiently stimulated, an ap occurs and the neuron fires". Resting electrical charge of -70 mv (interior) When a neuron is stimulated, there is depolarization, if it is sufficient, the electrical charge may reach. 50mv (threshold) in which there will be a dramatic change of the membrane potential to +40mv to fire. This is an all-or-none principle, there is either one or nothing: neurotransmitters and the synapse. The chemical component of the neuronal communication.
