HSC 350 Lecture Notes - Lecture 2: Arcuate Fasciculus, Efferent Nerve Fiber, Basal Forebrain

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28 Aug 2016
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Organization of the nervous system: neural circuits == neurons organized into ensembles that process specific kinds of information, neural systems == circuits that process similar types of information that serve broader behavioral purposes. Sensory system == acquire & process information from the environment a: motor system == generates movement & other behavior c. Associational system == mediate the most complex brain functions. Afferent neurons carry information toward the brain or spinal cord. Efferent neurons carry information away from the brain or spinal cord. Interneurons only participate in the local aspects of the circuit. Consist of cerebral hemispheres, diencephalon, cerebellum, brainstem & spinal cord (analysis and integration of sensory and motor formation) Sensory transduction (cirtical first step in all sensory processing; energy is a stimuli that is converted to an electrical signal in the sensory neuron). Efferent signaling == neural control of striated muscle contraction is orchestrated by lower & upper motor neurons.

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