Suppose a particular neurotransmitter causes an IPSP in postsynaptic cell X and an EPSP in postsynaptic cell Y. A likely explanation is that a. the threshold value in the postsynaptic membrane is different for cell X and cell Y. b. the axon of cell X is myelinated, but that of cell Y is not. c. only cell Y produces an enzyme that terminates the activity of the neurotransmitter. d. cells X and Y express different receptor molecules for this particular neurotransmitter.

Video transcript

Hello everyone here. We have a question telling us to assume that we have pre synaptic cell A. And pre synaptic cell B. That are simultaneously releasing action potentials, causing two E. P. S. P. S. Directed towards a single post synaptic cell. See what type of summation is this? A temporal, be spatial? See rhythmic or D exponential when two p. S. P. S. Are in close proximity and added together to create a larger deep polarization or an e P. S. P. That is called a spatial summation. So our answer here is be spatial and it's because they're in close proximity. Thank you for watching. Bye.