Progress and issues in second-order analysis of hippocampal replay
Progress and issues in second-order analysis of hippocampal replay
复制标题
海马回放二阶分析的进展与问题
DOI:
10.1098/rstb.2019.0238
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Diba, Kamran
中科院分区:
文献类型:
--
作者:
van der Meer, Matthijs A.;Kemere, Caleb;Diba, Kamran
Patterns of neural activity that occur spontaneously during sharp-wave ripple (SWR) events in the hippocampus are thought to play an important role in memory formation, consolidation and retrieval. Typical studies examining the content of SWRs seek to determine whether the identity and/or temporal order of cell firing is different from chance. Such ‘first-order’ analyses are focused on a single time point and template (map), and have been used to show, for instance, the existence of preplay. The major methodological challenge in first-order analyses is the construction and interpretation of different chance distributions. By contrast, ‘second-order’ analyses involve a comparison of SWR content between different time points, and/or between different templates. Typical second-order questions include tests of experience-dependence (replay) that compare SWR content before and after experience, and comparisons or replay between different arms of a maze. Such questions entail additional methodological challenges that can lead to biases in results and associated interpretations. We provide an inventory of analysis challenges for second-order questions about SWR content, and suggest ways of preventing, identifying and addressing possible analysis biases. Given evolving interest in understanding SWR content in more complex experimental scenarios and across different time scales, we expect these issues to become increasingly pervasive.This article is part of the Theo Murphy meeting issue ‘Memory reactivation: replaying events past, present and future’.
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DOI:
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