PSYC 251 Lecture Notes - Lecture 3: Microglia, Sympathetic Nervous System, Ependyma

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Neurons function by establishing a membrane potential firing when it passes the threshold. Reflex circuit: sensory receptor detects stimuli and fires an action potential into the spinal chord. Interneuron is caused to inhibit some muscles through the dorsal root: muscle neuron is caused to react through the ventral root. Hitting your knee causes an action potential to form, causing a bump in the action potential of the inter neuron and the extensor motor neuron but a decrease in the action potential of the flexor muscle (inhibitor) This system can be artificially modeled with w neural network: used to understand how the brain processes information. The second most common structure found within the brain are the glia cells (glue: holds neurons in places- apart of the neural system but not a neuron. Astrocytes cns and satellite cells in the pns: structural support and help for the blood brain barrier.

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