Summation of excitatory postsynaptic potentials increases the probability that the potential will reach the threshold potential and generate an action potential, whereas the summation of inhibitory postsynaptic potentials can prevent the cell from achieving an action potential.
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Step 1: Summation of excitatory postsynaptic potentials increases the probability that the potential will reach the threshold potential and generate an action potential. Show more…
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When neurotransmitters cross the synaptic cleft and bind to ligand-gated potassium channels, the inside of the cell becomes more positive. As a result, the cell approaches threshold and an inhibitory postsynaptic potential is generated. Subsequently, the axon hillock generates an action potential.
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The combined effects of inhibitory and excitatory effects on a postsynaptic cell will decide whether that cell generates an action potential. This principle is called ________. A. threshold B. internalization C. summation D. potentiation E. transmission
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Increasing excitatory signals above threshold levels for neural activation will not affect the intensity of an action potential. this indicates that the reaction of a neuron is:
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