What are neurons?
Scientific American explains what neurons are and how they function.
Neurons are the tiny processing units within the human brain and nervous system.
Our brains have about 86 billion neurons. Even more are spread throughout the body, communicating by electrical and chemical signals through incredibly thin cables.
Whenever we see, hear, or otherwise perceive the world, thousands of sensory neurons send signals to our spinal cord and brain. And thanks to other neurons, we’re able to make sense of those perceptions and react accordingly.
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