Explore
Neuroscience
Through Interactive
Simulations

A concentration gradient explains how particles move from one side to another across a border. A key point is that chemical gradients refer to net movement -- particles are always moving back and forth across any semi-permeable membrane. Equal concentration is reached when this exchange becomes balanced and equal in both directions, even though movement continues. Use this simulation to see how that balance is reached.

[Placeholder] This simulation illustrates how membrane permeability affects particle movement across the membrane.

[Placeholder] Learn how the Nernst Equation calculates the equilibrium potential for specific ions based on their concentration gradients.