https://pubmed.ncbi.nlm.nih.gov/23966848/?dopt=Abstract
Nicotine exerts its reinforcing action by stimulating nicotinic acetylcholine receptors (nAChRs) and boosting dopamine (DA) output from the ventral tegmental...
endogenouscholinergicinputslocalcircuit
https://elifesciences.org/articles/13388/figures
Neural confidence signals can take the role of reward signals and explain perceptual learning without external feedback as a form of internal reinforcement...
perceptual learningfiguresdatamesolimbicconfidence