#neurobio notes

[er-cryptid]

[er-cryptid]

Potentials in Neurons

-- potential = difference in electrical charges

-- two kinds of neural potential      -- resting potential      -- action potential

-- resting potential      -- maintained by inactive neuron      -- negative electric charge of 70 millivolts      -- present in unstimulated neuron

-- once neuron is stimulated, action potential is produced

-- resting potential changes to action potential if stimulation reaches the neural threshold

-- neural threshold = limit below which neuron is unable to fire

-- stimulation must be able to alter membrane permeability through neuron firing

-- polarization = change in membrane permeability

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