01:830:101 Lecture Notes - Lecture 10: Reward System, Dendrite, Resting Potential
01:830:101 verified notes
10/11View all
Document Summary
Explaining behavior: physiological explanations, mechanisms, activity of cells. Glial cells (stuff around neurons that help them communicate) Sensory neurons: bring information from sense organs. Motor neurons: send information to muscles, glands, and organs. Interneurons: the neurons that communicate between brain and spinal cord. Dendrites: where the neurotransmitters come in, metaphorically: where the information comes in. Cell body: where the signal is given to fire . Axon: where the depolarization occurs, how information is transmitted over long distances, myelin sheath, node of ranvier. Terminal button: where the information is released. Resting potential - electrical stage where the neuron is not doing anything. Threshold of excitation it sends the information on. Neurons fires: upsurge of positive charge, spike travels along the axon. Refractory period (moment when the neuron cannot fire) Excitatory increase chance of post-synaptic neuron firing. Inhibitory- decrease chance of post- synaptic neuron firing. Cell body: receive information: summation of all the information, depolarization, hyperpolarization.
