The Second Clinical Medicine School of Guangzhou Medical University 1 article published in JoVE Neuroscience Ex Vivo Calcium Imaging for Drosophila Model of Epilepsy Ming-Feng He1, Chu-Qiao Liu2, Xi-Xing Zhang2, Yong-Miao Lin2, Yu-Ling Mao3,4, Jing-Da Qiao1 1Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, the Second Affiliated Hospital, Guangzhou Medical University, 2The Second Clinical Medicine School of Guangzhou Medical University, 3Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, 4Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University Here, we present a protocol for ex vivo calcium imaging in GCaMP6-expressing adult Drosophila to monitor epileptiform activities. The protocol provides a valuable tool for investigating ictal events in adult Drosophila through ex vivo calcium imaging, allowing for exploration of the potential mechanisms of epilepsy at the cellular levels.