Catarina Deseyve, graduated in biology, and currently a Master student developing my master project, entitled as “Nucleus accumbens neuronal activity in associative learning”. The project aims to identify the anatomical distribution of NAc neuronal ensembles that represent early versus late learning cue-reward in Pavlovian conditioning responses. In addition, we are trying to determine the functional relevance of accumbal D1- and D2-MSNs for the acquisition of CS-US (for both reward and punishment) associative learning, using fiber photometry.