Lec16 02_20_08 Intelligence

Lec16 02_20_08 Intelligence - Lecture 16. Intelligence...

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Lecture 16. Intelligence February 19, 2007 See Chapter 11 in Cheung, Fundamental Concepts in Biology Outline Synapses and neurotransmission Brain power and intelligence Why have more complex behaviors and intelligence evolved?
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Action potential in nerve cells Na + and K + Na + into cell cell K + moves out of cell Action potential Sequential opening of Na + and K + channels Localized change in voltage Action potential moves down axon Cell Membrane TTX Na/K pump Na + K +
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Action of the neurons
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The synapse Communication between neurons and cells Neurotransmitters (NT) Many different NTs (100’s) Acetylcholine Epinephrine (EpiPen) Stored in vesicles (sacs) Vesicle fuse w/ membrane Release contents into synapse Receptors on post-synaptic cell Bind neurotransmitter Open ion channels Initiate new action potential Drugs can affect NT systems Post-synaptic neuron Note: receptors Presynaptic neuron Synaptic cleft
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Nerve cell poisons
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This note was uploaded on 05/01/2008 for the course BSC 1005 taught by Professor Brist during the Spring '08 term at University of Central Florida.

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Lec16 02_20_08 Intelligence - Lecture 16. Intelligence...

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