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Nerve connections

The electrical signals (nerve impulses) carried by neurones are passed on to other neurones at junctions called synapses. The signal may be directly transferred at electrical synapses or, if there is no physical link between adjacent neurones, the signal is carried across the gap by chemicals called neurotransmitters. By using neurotransmitters, the nervous system can alter the way a message is passed on. Each neurone communicates with many others and this contributes to the amazing complexity of the brain.

Each neurone communicates with many others.

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