PSYC 101 Lecture Notes - Lecture 10: Myelin, Threshold Potential, Membrane Potential
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PSYC 101 Full Course Notes
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Document Summary
Glial cells: glue that holds the brain together. Astrocytes: help provide the blueprint for the nervous system. Stopping the damage is thought to be more important than fix things (correct connections) Microglia: when something is dead or dying, it cleans it up (prevents further problems) Schwann cells: speed neuron transmission, fast transfer of information (signal and speed) Oligodendrocytes: speed neuron transmission, fast transfer of information (signal and speed) Sensory neurons are designed to pick up specific sets of information. Interneurons: integrating information across the senses (visual and audio) Motor neurons: movement signals, relay of movement commands. Cell body is important to create structure, support and protect everything inside. Axon hillock: puts together all the information, decides whether a signal is transmitting. Inside the neuron the membrane is more positive outside than inside. Threshold potential: if the threshold is broken information will be sent. Depolarization: more positive than usual, higher than the threshold.
