As far my knowledge, in body parts generally **acetacholine ** is the neurotransmitter. Which is responsible for most nervous impulses.
Consider a body part, say, foot. Only one nerve reaches here. When ant bites there, the impulse of pain and irritation moves from there ;
Secondly, when some soothing agent comes there the impulse of comfortness moves from there
Now, neurotransmitter is the same, nerve is the same, but different impacts are observed.
My teacher said that the impulse moves to different parts of the brain.
But how are the impacts really understood, analysed and sent to different regions ( as entrance of all stimuli enter through the same brain stem,)
My question is that how does our brain analyses two different stimuli when neurotransmitter is the same, nerve is the same and enter the brain through the same brain stem. They must be going to different regions of the brain but how is that decided