Robinson, P. K., & Trask, S. (in press) Unconditional stimulus deflation is stimulus specific. Learning & Behavior.
Robinson, P. K., & Trask, S. (2025). Context controls the ability of unconditional stimulus deflation to mitigate fear relapse. Brain Research, 149877.
Ferrara, N.C., & Trask, S. (2025) The consequences of stress on the brain and fear. eLife, 14, e108480.
Robinson, P. K., Jarome, T. J., & Trask, S. (2025). Differential impacts of advanced age and sex in age-related trace fear memory impairment in rats. Learning & Memory, 32, a054159.
Trask, S., Brooks, J. B., & Warner, S. (2025). The interval between conditional stimulus onset and unconditional stimulus onset, not training-to-test interval, determines patterns of immediate early gene expression in the anterior retrosplenial cortex. Neurobiology of Learning and Memory, 220, 108074.
Brooks, J. B., Robinson, P. K., Warner, S., Halder, P., & Trask, S. (2025) Stress-enhanced fear learning can be reduced with unconditional stimulus deflation with constraints. Behavioural Brain Research, 481, 115483.
Sharpe, M. J., Ferrara, N. C., Tronson, N. C., Perusini, J. N., Kwapis, J. L., & Trask, S. (in press). Unconditioned perspectives: New vistas on learning from the Pavlovian society. Neurobiology of Learning and Memory, 213, 107972.
Patrick, M.B., Preveza, N. J., Kincaid, S.E., Setenet, G., Abraham, J. R., Cummings, A., Banani, S., Ray, W.K., Helm, R.F., Trask, S., & Jarome, T.J. (2024). Dysregulation of baseline and learning-dependent protein degradation in the aged hippocampus. Brain Research Bulletin, 215, 111015.
Diehl, M. M., Moscarello, J. M., & Trask, S. (2024). Behavioral outputs and overlapping circuits between conditional fear and active avoidance. Neurobiology of Learning and Memory, 213, 107943. https://doi.org/10.1016/j.nlm.2024.107943
Trask, S., & Ferrara, N.C. (2024) Exposure therapy: Enhancing fear extinction. eLife, 13, e97633. https://doi.org/10.7554/eLife.97633
Robinson, P. K., Met Hoxha, E., Williams, D., Kinzig, K. P., & Trask, S. (2024) Fear extinction is impaired in aged rats. GeroScience, 46, 2815–2825. https://doi.org/10.1007/s11357-024-01084-5
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. https://doi.org/10.3389/fnbeh.2024.1347525
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. https://doi.org/10.3389/fnbeh.2024.1327858
Ferrara, N. C., Trask, S., Padival, M., & Rosenkranz, J. A. (2023). Maturation of a cortical-amygdala circuit limits sociability in male rats. Cerebral Cortex, 33, 8391-8404. https://doi.org/10.1093/cercor/bhad124
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.
https://doi.org/10.3389/fnsyn.2023.1146665
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. https://doi.org/10.1016/j.bpsgos.2023.01.001
Trask, S., Kuczajda, M. T., & Ferrara, N. C. (2023) The lifetime impact of stress on fear regulation and cortical function. Neuropharmacology, 224, 109367. https://doi.org/10.1016/j.neuropharm.2022.109367
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. https://doi.org/10.3389/fnbeh.2022.956102
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. https://doi.org/10.1016/j.nlm.2022.107626
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. https://doi.org/10.7554/eLife.75283
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. https://doi.org/10.1016/j.nlm.2022.107601
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. https://doi.org/10.1093/cercor/bhab436
Trask, S. (2022). Rethinking extinction-based treatments for specific phobias. Biological Psychiatry, 91, e15-e16. https://doi.org/10.1016/j.biopsych.2021.10.011
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. https://doi.org/10.1523/JNEUROSCI.1414-21.2021
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. https://doi.org/10.1016/j.nlm.2021.107530
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. https://doi.org/10.1016/j.nlm.2021.107526
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. https://doi.org/10.1016/j.neubiorev.2021.08.023
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. https://doi.org/10.3389/fnagi.2021.656944
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. https://doi.org/10.1038/s41386-021-00959-x
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. https://doi.org/10.1016/j.neubiorev.2021.01.021
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. https://doi.org/10.3390/ijms21155352
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. https://doi.org/10.1037/xan0000267
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. http://www.learnmem.org/cgi/doi/10.1101/lm.051185.119.
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. https://doi.org/10.1016/j.nlm.2020.107161
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. https://doi.org/10.1016/j.nlm.2019.107089
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. https://doi.org/10.1038/s41598-019-41526-1
Trask, S. (2019). Cues associated with alternative reinforcement can attenuate resurgence of an extinguished free operant response, Learning & Behavior, 47, 66-79. https://doi.org/10.3758/s13420-018-0339-9
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. http://dx.doi.org/10.1037/xan0000188
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. https://doi.org/10.1016/j.nlm.2018.07.010
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. https://doi.org/10.1002/jeab.446
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. https://doi.org/10.3758/s13420-017-0304-z
Trask, S. (2017). Free operant. In J. Vonk & T. K. Shackelford (Eds.), Encyclopedia of Animal Learning and Cognition, New York, NY: Springer. https://doi.org/10.1007/978-3-319-47829-6_1251-1
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. http://doi.org/10.1016/j.beproc.2016.10.003
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. https://doi.org/10.1523/JNEUROSCI.3361-16.2017
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. http://doi.org/10.3758/s13420-015-0195-9
Bouton, M. E., & Trask, S. (2016). Role of the discriminative properties of the reinforcer in resurgence. Learning & Behavior, 44, 137–150. http://doi.org/10.3758/s13420-015-0197-7
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. http://doi.org/10.1037/xan0000102
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. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4943327/
Trask, S., & Bouton, M. E. (2014). Contextual control of operant behavior: evidence for hierarchical associations in instrumental learning. Learning & Behavior, 42, 281–288. http://doi.org/10.3758/s13420-014-0145-y
