human
How does the brain work?
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The brain is made up of billions of neurons that are connected to each other. Neurons are the cells that make up the brain, and they communicate with each other through electrical signals called action potentials. These action potentials are generated when a neuron is excited by an external stimulus, such as light or sound. The signal then travels along the axon of the neuron until it reaches the end of the axon, where it triggers the release of neurotransmitters into the synapse. This causes the next neuron to be activated, which in turn sends its own signal down its axon. This process continues until the signal reaches the end of the axon and the signal is sent back to the original neuron.