PSY260H1 Study Guide - Midterm Guide: Trigeminal Nerve Nuclei, Interneuron, Brainstem

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PSY260H1 Full Course Notes
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Themes guiding current science of learning & memory: learning and memory are closely intertwined stages of informational processing. Learning is a process that generates memories; memories reflect successful learning. Early researchers observed brain tissue to be a network of jumble interconnected threads, stains b/c they are closely intertwined and stains colored all cells similarly. Reticular theory of brain circuitry: the brain"s wiring involved a fixed network of fine wires like a spider"s web. Cajal discovered that brain was not a reticular network, but composed of separate nerve cells connected to one another via specialized elements. There was no evidence of stain continuing to next cell as reticular theory suggested, thus he concluded cells communicated w/o joining their membranes and proposed the neuron doctrine. Neuron doctrine: hypothesis that brain is composed of discrete nerve cells that are essential units of info processing. Proposed that info flows one way (dendrite -> cell body -> axon)

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