A Postsynaptic Neuron Has Three Presynaptic Inputs-From Neurons X,Y,and Z

question 15

Multiple Choice

A postsynaptic neuron has three presynaptic inputs-from neurons X,Y,and Z.Stimulation of neuron X causes the postsynaptic neuron to depolarize by 0.5 mV. When X and Y are stimulated simultaneously,the postsynaptic neuron depolarizes by 1 mV. When X and Z are stimulated simultaneously,however,there is no change in the membrane potential of the postsynaptic neuron.What is most likely true about presynaptic neurons Y and Z?

• A)They are both excitatory.
• B)They are both inhibitory.
• C)Y is excitatory and Z is inhibitory.
• D)Z is excitatory and Y is inhibitory.

Recognize the reconstructive nature of memory and how it impacts personal experience.

Identify strategies to improve memory performance including mnemonic devices.

Understand the role of attention, organization, and processing depth in memory retention.

Recognize the significance of the serial-position effect in memory recall.

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