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Neurophysiology - Neurophysiology BRW Chapter 3 Three kinds...

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Neurophysiology BRW: Chapter 3
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Three kinds of electrical states or events in the nervous system: Resting membrane potential Neuron inactive Action potentials Propagation of signals along axons All - or - none, actively transmitted, non - decaying Postsynaptic potentials Initiated at postsynaptic sites on dendrites and cell body Graded, local, passively transmitted, decaying
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Three kinds of electrical states or events in the nervous system: Resting membrane potential Neuron inactive Action potentials Propagation of signals along axons All - or - none, actively transmitted, non - decaying Postsynaptic potentials Initiated at postsynaptic sites on dendrites and cell body Graded, local, passively transmitted, decaying
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The Resting Potential
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The resting potential arises from a combination of processes and forces: Di ff usion Selective permeability Electrostatic forces Also, sodium - potassium pumps move potassium ions into the cell and move sodium ions out of the cell.
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