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Unformatted text preview: not. “positive enough” for threshold of activation Must counter two effects: IPSPs and the energy lost in traveling to axon hillock The action potential is simply a massive momentary change in the potential in the cell. Huge depolarization from -70 to +50. ALL of NONE. How will my cells know there is more pain? Greater accumulation of such a signal. Spatial summation : WHERE is happens matters. Loses less energy the closer to the axon hillock it is....
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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.
- Winter '10