For the following questions, assume a hypothetical postsynaptic neuron has three presynaptic inputs: neurons X, Y, and Z. Also, assume neuron Z is excitatory. If neurons Y and Z receive simultaneous stimulation, what change would you expect in the postsynaptic neuron?
A) a single EPSP
B) a single IPSP
C) temporal summation of EPSPs
D) spatial summation of EPSPs
E) an IPSP and EPSP would cancel each other out, so there would be essentially no change in potential in the postsynaptic neuron

Question

Quizplus · Accepted Answer

Spatial summation occurs when multiple presynaptic neurons (Y and Z) stimulate the postsynaptic neuron simultaneously, leading to a combined effect, in this case, EPSPs from neuron Z.

For the Following Questions, Assume a Hypothetical Postsynaptic Neuron Has