Current projects

Molitor RJ*, Morton NW*, Schlichting ML, Mack ML, McKenzie S, Preston AR. In prep. Human hippocampus and medial prefrontal cortex represent hierarchical task schemas.

Noh, SM, Morton, NW, & Preston, AR. In prep. How blocked and interleaved sequences shape neural representations to improve learning and memory.


Varga NL, Morton NW, Preston AR. 2022. Schema, Inference, and Memory. Kahana MJ, Wagner AD, editors. PsyArXiv. doi:10.31234/ pdf.


Morton NW, Polyn SM. In revision. A neurocognitive theory of episodic and semantic interactions during memory search.

Morton NW, Zippi EL, Preston AR. In press. Memory reactivation and suppression modulate integration of the semantic features of related memories in hippocampus. Cerebral Cortex. code.

Varga NL, Morton NW, Preston AR. In press. Schema, Inference, and Memory. In: Kahana MJ, Wagner AD, editors. Oxford Handbook of Human Memory. Oxford University Press. pdf.

Pudhiyidath P*, Morton NW*, Viveros Duran R, Schapiro AC, Momennejad I, Hinojosa-Rowland DM, Molitor RJ, Preston AR. 2022. Representations of temporal community structure in hippocampus and precuneus predict inductive reasoning decisions. Journal of Cognitive Neuroscience. 34(10) 1736-1760. *authors contributed equally. doi:10.1162/jocn_a_01864. pdf. data. code.

Morton NW*, Zippi EL*, Noh SM, Preston AR. 2021. Semantic knowledge of famous people and places is represented in distinct networks that converge in hippocampus. Journal of Neuroscience. 41(12) 2762-2779. *authors contributed equally. doi:10.1523/JNEUROSCI.2034-19.2021. pdf. code.

Molitor RJ, Sherrill KR, Morton NW, Miller, AA, Preston AR. 2021. Memory reactivation during learning simultaneously promotes dentate gyrus/CA2,3 pattern differentiation and CA1 memory integration. Journal of Neuroscience. 41(4) 726-738. doi:10.1523/JNEUROSCI.0394-20.2020. pdf. code.

Morton NW, Preston AR. 2021. Concept formation as a computational cognitive process. Current Opinion in Behavioral Sciences. 38: 83-89. doi:10.1016/j.cobeha.2020.12.005. pdf.

Morton NW, Schlichting ML, Preston AR. 2020. Representations of common event structure in medial temporal lobe and frontoparietal cortex support efficient inference. Proceedings of the National Academy of Sciences. 117(47): 29338-29345. doi:10.1073/pnas.1912338117. pdf. data. code.

Morton NW. 2020. Psifr: Analysis and visualization of free recall data. Journal of Open Source Software, 5(54), 2669. doi:10.21105/joss.02669. pdf. code.

Morton NW*, Sherrill KR*, Preston AR. 2017. Memory integration constructs maps of space, time, and concepts. Current Opinion in Behavioral Sciences. 17:161-168. * authors contributed equally. doi:10.1016/j.cobeha.2017.08.007. pdf.

Chan SCY, Applegate MC, Morton NW, Polyn SM, Norman KA. 2017. Lingering representations of stimuli influence recall organization. Neuropsychologia. 97:72-82. doi:10.1016/j.neuropsychologia.2017.01.029. pdf.

Morton NW, Polyn SM. 2017. Beta-band activity represents the recent past during episodic encoding. NeuroImage. 147:692-702. doi:10.1016/j.neuroimage.2016.12.049. pdf.

Morton NW, Polyn SM. 2016. A predictive framework for evaluating models of semantic organization in free recall. Journal of Memory and Language. 86:119–140. doi:10.1016/j.jml.2015.10.002. pdf.

Polyn SM, McCluey JD, Morton NW, Woolard AA, Luksik AS, Heckers S. 2015. Temporal context and the organizational impairment of memory search in schizophrenia. Cognitive Neuropsychiatry. 20(4):296-310. doi:10.1080/13546805.2015.1031372. pdf.

Kragel JE, Morton NW, Polyn SM. 2015. Neural activity in the medial temporal lobe reveals the fidelity of mental time travel. Journal of Neuroscience. 35(7):2914-2926. doi:10.1523/JNEUROSCI.3378-14.2015. pdf.

Morton NW. Developing a neurocognitive model of temporal and semantic organization of memory search. 2014. Vanderbilt University, PhD dissertation. pdf.

Morton NW, Kahana MJ, Rosenberg EA, Baltuch GH, Litt B, Sharan AD, Sperling MR, Polyn SM. 2013. Category-specific neural oscillations predict recall organization during memory search. Cerebral Cortex. 23(10):2407-2422. doi:10.1093/cercor/bhs229. pdf.

Polyn SM, Kragel JE, Morton NW, McCluey JD, Cohen ZD. 2012. The neural dynamics of task context in free recall. Neuropsychologia. 50(4):447-457. doi:10.1016/j.neuropsychologia.2011.08.025. pdf.

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