Morphine reward effects and morphine behavioral sensitization: the adventitious association of morphine activation of brain reward effects with ongoing spontaneous activity - Dias, Fabiolla Patusco; Crespo, Luiz Gustavo Soares Carvalho; Junior, Joaquim Barbosa Leite; Samuels, Richard Ian; Coimbra, Norberto Cysne; Carey, Robert J.; Carrera, Marinete Pinheiro (Pharmacology, Biochemistry and Behavior, 2021)