Bhagat Singh ji in the inner part of the brain there is a small area which is called the "Pleasure Zone". Any sensory or other signal that after due filter and processing get to that zone, create a pleasuary sensation and hence pleasure.
I forgot what is the name of that zone! You recall.
Sat Sri Akal
PS: I could not hold back on a neuro-science tease knowing what your interests are lol
Interested? yes. Remember the stuff from lectures after 3 months? Nope.
Rewards/pleasure always has something to do with dopaminergic neurons. The limbic system, in general, deals with emotions.
I remember discussing the ventral tegmental area during the drug abuse portion of the class...
You are going to have to remind me what it is exactly. I have no idea.