Home | Publications | Dopamine signatures of excessive and compulsive cocaine and fentanyl use Dopamine signatures of excessive and compulsive cocaine and fentanyl use Ke Chen, Hao Zheng, Gabrielle Sevrain, Wenxi Xiao, Charlotte Wang, Akili Sundai, Ila Fiete, Fan Wang. bioRxiv, vol. 2026.01.18.700215 pp. , Jan 2026.