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. 2021 Oct 21;14:3333–3343. doi: 10.2147/JPR.S327945

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© 2021 Zhu et al.

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Results of correlation analyses between clinical variables and effective connectivity of the hippocampus across all migraine patients. (A) Correlation between migraine frequency and causal flow from the left hippocampus to mPFC; (B) Correlation between migraine frequency and causal flow from the right hippocampus to left cerebellum.

Abbreviations: GC, Granger causality; mPFC, medial prefrontal cortex.