Do graded potentials start as depolarization?

Graded potentials can start as either depolarization or hyperpolarization, depending on the type of stimulus and the ion channels involved. Depolarization occurs when sodium channels open, allowing Na+ ions to flow into the cell, making the inside more positively charged. Conversely, hyperpolarization happens when potassium channels open, allowing K+ ions to exit, making the inside more negatively charged. Thus, graded potentials reflect changes in membrane potential that can vary in magnitude and direction.