BIOGENIC AMINES AND THEIR ROLE IN AVERSIVE AND APPETITIVE LEARNING

FERNANDO LOCATELLI; MARTÍN KLAPPENBACH; LAURA KACZER

Neohelice granulata, a Model Species for Studies on Crustaceans

Cambridge Scholars Publishing

Año: 2020; p. 172 - 182

All together the results obtained in regards to the action of OA and DA indicate a dual role of these two biogenic amines in memory formation. While each one instructs the formation of one type of memory, they also interfere with the opposite one. This dual function must be interpreted as coordinated actions of the aminergic systems to avoid collision of contradictory information and prevent inconsistent behaviors. In this framework, it has to be considered that the competition between signals mediating coincident appetitive and aversive stimuli must represent a frequent situation in life. Learning events in the real world do rarely correspond to strict appetitive or aversive experiences. In contrast, many conditioned stimuli predict at the same time positive and aversive consequences, and the expectations acquired after learning must emerge from a trade-off between the advantage of being able to predict the occurrence of both unconditioned stimuli and the requirements of the animal at the moment of learning or retrieval.