BIPN10024

BIPN10024 - Dwayne Chang [email protected] OH Wed 12:30P...

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Dwayne Chang [email protected] OH: Wed 12:30P @ Leichtag Lobby Professor:  Dr. Fortes  BIPN 100 Winter 2008 Week 4 –Somatosensory System, Pain modulation, Nervous System I. Sensory system a. General Anatomy i. From the mechanoreceptor, there are ___ neurons; ___ synapses and eventually all sensory input reach the ________________ cortex. b. Lateral inhibition i. Purpose is to increases actual _____________. 1. Know the mechanisms of how this works! (Hint: Draw out three parallel neurons and how the activation of one will decrease (inhibit) neighboring synapses at the 2 nd sensory neuron. c. Adaptation i. 2 types 1. ___________-type are ones which are sensitive to changes and rapidly adapt to a sustained stimulus a. i.e. Olfactory receptors
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Dwayne Chang [email protected] OH: Wed 12:30P @ Leichtag Lobby Professor:  Dr. Fortes  BIPN 100 Winter 2008 2. ___________-type are ones which are best to detect prolonged stimulus a. i.e. Propioception, and others including _______________ ____________________________________________. d. Pathways i. Fine touch, vibrations, and propioception 1. 1 st neuron (primary)travels into the _____ where it ascends up ______________ (ipsilaterally / contralaterally) and synapses in the ____________ to the 2 nd neuron (secondary). Then the 2 nd neuron crosses over contralaterally and travels to the ________, where it synapses to the 3 rd neuron (tertiary). This neuron now goes and innervates its respective topographic region on the somatosensory cortex. ii.
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This note was uploaded on 04/14/2008 for the course BIPN 100 taught by Professor French during the Winter '07 term at UCSD.

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BIPN10024 - Dwayne Chang [email protected] OH Wed 12:30P...

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