Jeong was born and grew up in South Korea. After receiving his B.S. in Biology from Korea Advanced Institute of Science and Technology (KAIST), he went on to receive his PhD under the supervision of Prof. Min Whan Jung in KAIST, where he studied a role of hippocampus in the decision making tasks. In the Gogolla lab, Jeong is applying optogenetic and in-vivo electrophysiological recording in freely moving mice to study neural dynamics in emotions. In his free time, he enjoys reading, traveling and playing video games and sports.