Monday, 28 September 2015

neuroscience - Understanding the brain: how are neurotransmitters released in the brain?


I have a basic knowledge of how neural networks work. A potential difference is created that forces sodium, potassium, chloride, and calcium ions to flow which carries an electrical signal to the end of a synapse. From there, the presynaptic neuron releases neurotransmitters creating a potential difference to the postsynaptic neuron.


What I don't understand yet are the mechanics of which neurotransmitter will be released. Do the vesicles of each type of neurotransmitter have an energy threshold? If yes, when the highest energy threshold of a vesicle is achieved, does this mean all the other vesicles will release the encapsulated neurotransmitters?





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