Final answer:
The two types of electrical signals a neuron can send to another neuron are action potentials, which are rapid and substantial depolarizations that travel along the axon, and graded potentials, which are local changes in membrane potential reflecting stimulus strength.
Step-by-step explanation:
The two types of electrical signals that a cell body of a neuron can send to another neuron are the action potential and the graded potential. An action potential is a rapid and substantial depolarization of the neuron's membrane that travels along the axon. For an action potential to be generated, the neuron must reach a certain threshold, which is often achieved through the summation of graded potentials. Graded potentials are local changes in membrane potential that occur in varying degrees of magnitude, which reflect the strength of the stimulus. They can be either depolarizing or hyperpolarizing, and their effects can add up (or summate) to bring the neuron closer to or further from the threshold for an action potential.