Neurons: The Electrical Basis of Thought

Your brain cells are basically tiny, charged-up batteries. At rest, your neurons are

negatively charged inside. But when a signal hits, gates fly open and

positive sodium ions flood in. This flips the charge, creating an electrical spike called an

action potential. That's your thought, your feeling, your movement. To reset,

the cell kicks out other positive ions to restore the negative charge. For a split second,

it even gets extra negative, which prevents the signal from going backward.

This electrical impulse literally leap-frogs down the nerve for super speed.

Every single thing you do is just this tiny electrical flip.