Answer
A change in membrane potential from -70 mV to -60mV is a depolarizing graded potential. In the change from -70 mV to -60- mV the membrane potential has grown less negative, that is, the neuron has become less polarized..
Work Step by Step
A membrane potential of -60 mV is closer to threshold (-55 mV) than is -70 mV. At -60 mV it is easier for the membrane to generate an action potential (AP).
