So the electrical signal is received or accepted by the dendrites of our cells by these projections shown in the following diagram. Now, once our dendrites actually receive this electrical signal, they can send that electrical signal through the cytosol and the membrane of the cell body. Now, the cell body is not actually itself capable of producing an action potential, but the cell body can pass down that electrical signal to the axon hillock. Now, once at the axon hillock, if the stimulation is high enough, if it reaches or exceeds the threshold value, then the axon will generate an action potential. Now an action potential is basically a difference in the voltage between the outside and the inside of our cell. And this creates an electric current that is passed down along the axon.