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Robinson, P. K., Met Hoxha, E., Williams, D., Kinzig, K. P., & Trask, S. (in press) Fear extinction is impaired in aged rats. GeroScience.

Ritger, A., Parker, R.K., Trask, S., & Ferrara, N.C. (2024). Elevated fear states facilitate ventral hippocampal engagement of basolateral amygdala neuronal activity. Frontiers in Behavioral Neuroscience, 18, 1347525.

Met Hoxha, E., Robinson, P. K., Greer, K. M., & Trask, S. (2024). Generalization and discrimination of inhibitory avoidance differentially engage anterior and posterior retrosplenial subregions. Frontiers in Behavioral Neuroscience, 18, 1327858.

Ferrara, N. C., Trask, S., Padival, M., & Rosenkranz, J. A. (in press). Maturation of a cortical-amygdala circuit limits sociability in male rats. Cerebral Cortex.

Ferrara, N.C., Kwapis, J. L., & Trask, S. (2023). Memory retrieval, reconsolidation, and extinction: Exploring the boundary conditions of post-conditioning cue exposure. Frontiers in Synaptic Neuroscience, 15, 1146665.

Bonanno, G.R., Met Hoxha, E., Robinson, P.K., Ferrara, N.C., & Trask, S. (2023). Fear reduced through unconditional stimulus deflation is behaviorally distinct from extinction and differentially engages the amygdala. Biological Psychiatry: Global Open Science.

Trask, S., Kuczajda, M. T., & Ferrara, N. C. (2023) The lifetime impact of stress on fear regulation and cortical function. Neuropharmacology, 224, 109367.

Ferrara, N.C., Trask, S., Ritger, A., Padival, M., Rosenkranz, J.A. (2022). Developmental differences in amygdala projection neuron activation associated with isolation-driven changes in social preference. Frontiers in Behavioral Neuroscience, 16, 956102.

Ferrara, N. F., Trask, S., Yan, L., Padival, M., Helmstetter, F. J., & Rosenkranz, J. A. (2022). Isolation driven changes in Iba1 morphology are associated with social recognition memory in adults and adolescents. Neurobiology of Learning and Memory, 107626.


Trask, S., Mogil, J. S., Helmstetter, F. J., Stucky, C. L., & Sadler, K. E. (2022). Contextual control of conditioned pain tolerance and endogenous analgesic systems. eLife, 11, e75283.

Trask, S., & Fournier, D. I. (2022). Examining a role for the retrosplenial cortex in age-related memory impairment. Neurobiology of Learning and Memory, 189, 107601.

Trask, S., & Helmstetter, F. J. (2022). Unique roles for the anterior and posterior retrosplenial cortices in encoding and retrieval of memory for context. Cerebral Cortex, 32, 3602 – 3610.

Trask, S. (2022). Rethinking extinction-based treatments for specific phobias. Biological Psychiatry,  91, e15-e16.


Ferrara, N. C., Trask, S., Avonts, B., Loh, M. K., Padival, M., & Rosenkranz, J. A. (2021). Developmental shifts in amygdala activity during a high social drive state. The Journal of Neuroscience, 41, 9308-9325.

Trask, S., Ferrara, N. C., Grisales, K., & Helmstetter, F. J. (2021). Optogenetic inhibition of either the anterior or posterior retrosplenial cortex disrupts retrieval of a trace, but not delay, fear memory. Neurobiology of Learning and Memory, 185,  107530.

Ferrara, N.C.*, Trask, S.*, Pullins, S.E., & Helmstetter, F.J. (2021) Inhibition of the thalamo-amygdala pathway facilitates extinction learning. Neurobiology of Learning and Memory, 185, 107526. *Denotes equal contribution.

Trask, S., Ferrara, N.C., Jasnow, A.M., Kwapis, J.L. (2021). Contributions of the cingulate-retrosplenial cortical axis to associative learning and memory: A proposed circuit for persistent memory maintenance. Neuroscience & Biobehavioral Reviews, 130, 178-184.

Dulka, B. N., Trask, S., & Helmstetter, F. J. (2021). Age-related memory impairment and sex-specific alterations in phosphorylation of the Rpt6 proteasome subunit and polyubiquitination in the basolateral amygdala and medial prefrontal cortex. Frontiers in Aging Neuroscience, 13, 163.

Trask, S., Pullins, S.E., Ferrara, N.C., & Helmstetter, F.J. (2021). The anterior retrosplenial cortex encodes event-related information and the posterior retrosplenial cortex encodes context-related information during memory formation. Neuropsychopharmacology, 43, 1386-1392.

Ferrara, N.C., Trask, S., & Rosenkranz, J.A. (2021). Maturation of amygdala inputs regulate shifts in social and fear behaviors: A substrate for developmental effects of stress. Neuroscience and Biobehavioral Reviews, 125, 11-25.

Trask, S., Dulka, B. N., & Helmstetter, F. J. (2020). Age-related memory impairment is associated with increased zif268 protein accumulation and decreased Rpt6 phosphorylation. International Journal of Molecular Sciences, 21, 5352.

Bouton, M. E., Thrailkill, E. A., Trask, S., & Alfaro, F. (2020). Correction of response error vs. stimulus error in the extinction of discriminated operant learning. Journal of Experimental Psychology: Animal Learning and Cognition, 46, 398-497.


Trask, S., Reis, D. S., Ferrara, N. C., & Helmstetter, F. J. (2020). Decreased cued fear discrimination learning in female rats as a function of estrous phase. Learning & Memory, 27, 254-257.


Trask, S., Shipman, M. L., Green, J. T., & Bouton, M. E. (2020). Some factors that restore goal-direction to habitual behavior. Neurobiology of Learning and Memory, 169, 107161.


Ferrara, N.C., Trask, S., Pullins, S.E., & Helmstetter, F.J. (2019). The dorsal hippocampus mediates synaptic destabilization and memory lability in the amygdala in the absence of contextual novelty. Neurobiology of Learning and Memory, 166, 107089.


Ferrara, N.C., Jarome, T.J., Cullen, P.K., Orsi, S.A., Kwapis, J.L., Trask, S., Pullins, S.E., & Helmstetter, F.J. (2019). GluR2 endocytosis-dependent protein degradation in the amygdala mediates memory updating, Scientific Reports, 9, 5180.


Trask, S. (2019). Cues associated with alternative reinforcement can attenuate resurgence of an extinguished free operant response, Learning & Behavior, 47, 66-79.


Thrailkill, E. A., Trask, S., Vidal, P., Alcalá, J. A., & Bouton, M. E. (2018). Stimulus control of actions and habits: A role for reinforcer predictability and attention in the development of habitual behavior, Journal of Experimental Psychology: Animal Learning and Cognition, 44, 370-384.


Shipman, M. L., Trask, S., Bouton, M. E., & Green, J. T. (2018). Inactivation of the pre- or infralimbic cortices differentially affects minimally and extensively trained actions, Neurobiology of Learning and Memory, 155, 164-172.


Trask, S., Keim, C. L., & Bouton, M. E. (2018). Factors that encourage generalization from extinction to test reduce resurgence of an extinguished operant response, Journal of the Experimental Analysis of Behavior, 110, 11-23.


Trask, S., & Bouton, M. E. (2018). Retrieval practice after multiple context changes, but not long retention intervals, reduces the impact of a final context change on instrumental behavior. Learning & Behavior, 46, 213-221.


Trask, S. (2017). Free operant. In J. Vonk & T. K. Shackelford (Eds.), Encyclopedia of Animal Learning and Cognition, New York, NY: Springer.


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


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. (2016). Role of the discriminative properties of the reinforcer in resurgence. Learning & Behavior, 44, 137–150.


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., 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.


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

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