A Postsynaptic Neuron Has Three Presynaptic Inputs - from Neurons

Multiple Choice

A postsynaptic neuron has three presynaptic inputs - from neurons X,Y and Z.When X and Y are stimulated simultaneously and repeatedly,the postsynaptic neuron reaches threshold and undergoes an action potential.When X and Z are stimulated simultaneously,however,there is no change in the membrane potential of the postsynaptic neuron.The simultaneous stimulation of X and Y is an example of

A) Temporal summation
B) Presynaptic inhibition
C) Spatial summation
D) Neuronal divergence
E) None of the choices are correct