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    Children show adult-like hippocampal pattern similarity for familiar but not novel events

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    BenearEtAl-PrePrint-2021-11.docx
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    Genre
    Pre-print
    Date
    2022-06-29
    Author
    Benear, Susan cc
    Horwath, Elizabeth A.
    Cowan, Emily cc
    Camacho, M. Catalina
    Ngo, Chi T.
    Newcombe, Nora cc
    Olson, Ingrid cc
    Perlman, Susan B.
    Murty, Vishnu cc
    Department
    Psychology and Neuroscience
    Subject
    Representational similarity analysis
    Hippocampus
    Cognitive development
    Episodic memory
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/7968
    
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    DOI
    https://doi.org/10.1016/j.brainres.2022.147991
    Abstract
    The ability to detect differences among similar events in our lives is a crucial aspect of successful episodic memory performance, which develops across early childhood. The neural substrate of this ability is supported by operations in the medial temporal lobe (MTL). Here, we used representational similarity analysis (RSA) to measure neural pattern similarity in hippocampus, perirhinal cortex, and parahippocampal cortex for 4- to 10-year-old children and adults during naturalistic viewing of clips from the same compared to different movies. Further, we assessed the role of prior exposure to individual movie clips on pattern similarity in the MTL. In both age groups, neural pattern similarity in hippocampus was lower for clips drawn from the same movies compared to those drawn from different movies, suggesting that related content activates processes focused on keeping representations with shared content distinct. However, children showed this only for movies with which they had prior exposures, whereas adults showed the effect regardless of any prior exposures to the movies. These findings suggest that children require repeated exposure to stimuli to show adult-like MTL functioning in distinguishing among similar events.
    Citation
    Benear, S. L., Horwath, E. A., Cowan, E., Camacho, M. C., Ngo, C. T., Newcombe, N. S., Olson, I. R., Perlman, S. B., & Murty, V. P. (2022). Children show adult-like hippocampal pattern similarity for familiar but not novel events. Brain Research, 1791. https://doi.org/10.1016/j.brainres.2022.147991
    Citation to related work
    Elsevier
    Has part
    Brain Research, Vol. 1791
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    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/7940
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