Graded potentials and action potentials are both important for how neurons communicate with each other. But they work in different ways.

Graded Potentials:

• These are small changes in the electrical charge of a neuron’s membrane.
• They can vary in size. The stronger the stimulus, the bigger the change.
• Many graded potentials can add together for a bigger impact.

Action Potentials:

• These are strong signals that either happen completely or not at all.
• They start when the neuron reaches a certain point called the threshold (which is -55 mV).
• Once triggered, action potentials move along the neuron without getting weaker.

To sum it up, graded potentials are like quiet whispers, while action potentials are loud shouts that can reach far distances!