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Nicotine
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Activates dopamine neurons by mimicking the effect of dopamine in binding to receptors in the cells' surface. Its initial effect is therefore similar to a dopamine rush. Nicotine quickly desensitizes the cells it works on so the initial effects are no longer felt. Nicotine also affects neurons that produce a neurotransmitter called acetylcholine. This is one of the chemicals involved in alertness and is known to boost memory. |
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