Prefrontal to ventral tegmental area dynamics drive contingency degradation - Madelyn M. Hjort; Zoe Q. Garrett; Adam G. Gordon; Ethan Ancell; Marta Trzeciak; Pei-Yun Lu; Michael R. Bruchas; Daniela M. Witten; Nicholas A. Steinmetz; Garret D. Stuber (Nature, 2026)