7 - milliseconds*when people have Multiple Sclerosis it’s...

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Neural Communication Biological Psychology branch of psychology concerned with the links between biology and behavior some biological psychologists call themselves behavioral neuroscientists, neuropsychologists, behavior geneticists, physiological psychologists, or biopsychologists Neuron a nerve cell- group of neurons=organs--> group of organs=system. ..etc etc the basic building block of the nervous system Dendrite the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body Axon the extension of a neuron, ending in branching terminal fibers, through which messages are sent to other neurons or to muscles or glands- an impulse comes in from the dendrite and exits from the axon Myelin [MY-uh-lin] Sheath a layer of fatty cells segmentally encasing the fibers of many neurons makes possible vastly greater transmission speed of neutral impulses--speeds up the transfer of information- measured in
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Unformatted text preview: milliseconds-*when people have Multiple Sclerosis it’s because of damage to the Myelin Sheath. Action Potential a neural impulse; a brief electrical charge that travels down an axon generated by the movement of positively charged atoms in and out of channels in the axon’s membrane * like the impulses we were just talking about with the Myelin Sheaths* Threshold the level of stimulation required to trigger a neural impulse Synapse [SIN-aps] junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron tiny gap at this junction is called the synaptic gap or cleft Neurotransmitters chemical messengers that traverse the synaptic gaps between neurons when released by the sending neuron, neuro-transmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether it will generate a neural impulse...
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This note was uploaded on 01/22/2009 for the course PSYCH 2000 taught by Professor Edwards during the Spring '09 term at Auburn University.

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