Define summation with respect to postsynaptic Vm during i. Temporal summation ii
ID: 3478237 • Letter: D
Question
Define summation with respect to postsynaptic Vm during i. Temporal summation ii. Spatial summation iii. Be able to teach what is similar and different between these two types of summation. Define summation with respect to postsynaptic Vm during i. Temporal summation ii. Spatial summation iii. Be able to teach what is similar and different between these two types of summation. i. Temporal summation ii. Spatial summation iii. Be able to teach what is similar and different between these two types of summation.Explanation / Answer
Answer
Post synaptic summation is the physiological combination of multiple synaptic signals to reach the threshold and initiate postsynaptic action potential.
post synaptic summation is of two types
i. temporal summation
ii. Spatial Summation
Temporal summation;
it is the effect produced by particular neuron to achieve action potential. in this succeeding signal is summed up to produce threshold potential. It also depends on frequency of action potential. The time of a postsynaptic potential is longer than the interval between two action potentials. The postsynaptic potentials is either excitatory or inhibitory effect.
Spatial summation
it is the method of development of action potential in neurons which receives inputs fro different neuronal cells.
in this stimulations from additional synapses are recruited to generate s response.
in this, during excitatory phase the potential reaches the threshold and generate next action potential.
during inhibitory phase prevents or neutralises cell from producing action potential.
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