06-07-2013, 06:42 PM
131
Re: Oh No, Not Again !!
Originally Posted by Pats
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Nicotine effects on the brain.Increased release of acetylcholine from the neurons, leading to heightened activity in cholinergic pathways throughout your brain. This cholinergic activity calls your body and brain to action, and this is the wake-up call that many smokers use to re-energize themselves throughout the day. Through these pathways, nicotine improves your reaction time and your ability to pay attention, making you feel like you can work better.
Stimulation of cholinergic neurons promotes the release of the neurotransmitter dopamine in the reward pathways of your brain. This neural circuitry is supposed to reinforce behaviors that are essential to your survival, like eating when you're hungry. Stimulating neurons in these areas of the brain brings on pleasant, happy feelings that encourage you to do these things again and again. When drugs like cocaine or nicotine activate the reward pathways, it reinforces your desire to use them again because you feel so at peace and happy afterwards.
i.e a nicotine 'high'
By the way: as we're being pedantic - it's 'affects' not 'effects'.
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