Josselyn, S.A., Frankland, P.W. (2018). Fear Extinction Requires Reward.  Cell 175(3): 639--640.

FBrf0240419

Note

Learning theorists long hypothesized that appetitive and aversive motivational states influence one another antagonistically. Here, Felsenberg et al. show that the activity of neurons in Drosophila known to be important in appetitive conditioning is necessary for the extinction of aversive conditioning, thereby uncovering biological evidence for this opponent-process.