PSY_3_1_12_2010_9 - help Then 2 relative refractory period need much strong depolarization much stronger EPSP’s to activate*Importance of

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As potassium is leaving the cell,  the cell becomes negative again  (hyperpolarized).  More negative  even than during rest. Impossible of very hard to create  new action potential—called  refractory period , divided in two  parts:  1) absolute refractory  period- no matter how strong the  signal will be, no matter how  strong EPSP signals are, it won’t 
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Unformatted text preview: help. Then 2) relative refractory period- need much strong depolarization, much stronger EPSP’s to activate. *Importance of refractory period: keeps signal going in one direction What ends the action potential? What brings it back to normal? – sodium ion pumps...
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This note was uploaded on 03/05/2010 for the course PSYCH PSYCH 3 taught by Professor Cohen during the Winter '10 term at California State University , Monterey Bay.

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