first, link the definition of the action potential refractory periods, and then drag the name to the proper location on the image. 1. a time when there is a decrease in the sensitivity of the plasma membrane to further stimulation (click to select)2. the time when there is complete insensitivity of the plasma membrane to another stimulus (click to select)3. the time when a stronger-than-threshold stimulus is needed to initiate another action potential (click to select)