Before we can understand neurons, action potentials, or synapses, we need to understand the physical principles underneath them.
This module starts from zero.
Start with atoms — the basic building blocks behind chemistry, biology, and neurobiology.
Understand electrical charge, attraction, repulsion, and why electricity matters in neurobiology.
Learn how atoms become ions by gaining or losing electrons, and why ions are essential in neurobiology.
Explore what salts are, how they separate into ions in water, and why dissolved ions are essential for the nervous system.
Understand random molecular motion, thermal energy, and why particles are constantly moving.
Learn how diffusion works, what concentration gradients are, and why biological systems maintain important differences.