Heike Wägele & Annette Klussmann-Kolb [creativecommons license] via Wikimedia CommonsAppetite can be defined as a craving that is fulfilled via consumption, such as hunger. A new report from Keiko Hirayama and Rhanor Gillette (University of Illinois, Urbana) describes appetite at the neural-network level and shows how it controls a decision-making circuit in the sea slug Pleurobranchaea californica.
Fluent in Science