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a) an decrease in amplitude of action potentials in a neuron
b) an shorter duration of the action potential in a neuron
c) a increase in action potential frequency in a neuron
d) none of the above

This for physiology of organisms class.  I know its not a or c but can't seem to find the answer.

I'm going with A.

I thought the amplitude was affected by increase or decrease in stimulus.

So, are you going to go with A?

No because it doesn't seem correct.  Can you explain why choose a?

I just assumed that less intensity leads to a smaller amplitude in the action potential wave. The strength of the stimulus must be very high in oder to ensure that the duration of the action potential is as short as the duration of the absolute refractory period. A stronger than normal stimulus is required to overcome the relative refracctory period.

Now I'm confused.

Sorry, I made a mistake on my first reply.  I know that the amplitude isn't affected by increased in intensity.  It just increases the number of action potentials.

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I think its d too so that's what I'm going with.  Thank you

Glad you found the correct answer...

Thank you for your help.