Sydney Trask

Postdoctoral Researcher


Degree: PhD, University of Vermont, 2017


I use Pavlovian fear conditioning to examine the neural and molecular mechanisms that underlie the formation and destabilization of these memories.


Trask, S., & Bouton, M. E. (2014). Contextual control of operant behavior: Evidence for hierarchical associations in instrumental learning. Learning & Behavior, 42, 281-288.

Trask, S., Schepers, S. T., & Bouton, M. E. (2015). Context change explains resurgence after the extinction of operant behavior. Mexican Journal of Behavior Analysis, 41, 187-210.

Bouton, M. E., & Trask, S. (2016). Role of the discriminative properties of the reinforcers in resurgence. Learning & Behavior, 44, 137-150.

Trask, S., & Bouton, M. E. (2016). Discriminative properties of the reinforcer can be used to attenuate the renewal of extinguished operant behavior. Learning & Behavior, 44, 151-161.

Bouton, M. E., Trask, S., & Carranza-Jasso, R. (2016). Learning to inhibit the response during instrumental (operant) extinction. Journal of Experimental Psychology: Animal Learning and Cognition, 42, 246-258.

Trask, S., Shipman, M. L., Green, J. T., & Bouton, M. E. (2017). Inactivation of the prelimbic cortex attenuates context-dependent excitatory operant responding. The Journal of Neuroscience, 37, 2317-2324.

Trask, S., Thrailkill, E. A., & Bouton, M. E. (2017). Occasion setting, inhibition, and the contextual control of extinction in Pavlovian and instrumental (operant) learning. Behavioural Processes, 137, 64-72.

Trask, S., & Bouton, M. E. (in press). Retrieval practice after multiple context changes, but not long retention intervals, reduces the impact of a final context change on instrumental behavior.

Trask, S. (in press). Free operant. In J. Vonk & T. K. Shackelford (Eds.), Encyclopedia of Animal Learning and Cognition, New York, NY: Springer.