[1P] 51 Appetitive and Aversive Learning

[1P-171] The paradoxical effect hypothesis of abused drugs in a rat model of chronic morphine administration

*Andrew Chih-Wei Huang¹, Ying Hao Yu^1,2, Alan He¹, Michelle Liou³, Chen Yin Ou¹, Anna Kozłowska⁴, Ping-Wen Chen¹ (1. Fo Guang University, 2. Department of Biotechnology and Animal Science, National ILan University, Yilan 26047, Taiwan, 3. Institute of Statistical Science, Academia Sinica, Taipei, Taiwan, 4. Department of Human Physiology and Pathophysiology, Collegium Medicum, University of Warmia and Mazury, Warszawska Av, 30, 10-082 Olsztyn, Poland)

Keywords:morphine, the paradoxical effect hypothesis of abused drugs, reward, aversion