Science
How does the brain work?
The brain works as a vast network of billions of nerve cells called neurons that send electrical and chemical signals to each other. These signals form patterns that let you think, feel, move, remember, and sense the world.
See it in motion.
Watch a 2-minute animated lesson that shows exactly how the brain works.
Step by step
- 1Billions of neurons pass signals across tiny gaps called synapses.
- 2Signals are part electrical, part chemical (neurotransmitters).
- 3Different regions specialize in vision, movement, language, and emotion.
- 4Connections strengthen with use — the basis of learning and memory.
Frequently asked questions
- How do brain cells communicate?
- Neurons fire electrical signals and release chemicals across synapses to pass messages to neighboring cells.
- Does the brain really change when we learn?
- Yes — repeated use strengthens connections between neurons, which is how skills and memories form.
- Which part of the brain does what?
- Regions specialize — for example, the occipital lobe handles vision and the frontal lobe handles planning and decisions.