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Hidden Markov model (HMM) reveals brain states in electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) data that differ between eyes open and eyes closed (EC) resting states. EEG HMM identified a high alpha power state with significant BOLD correlates resembling previously identified alpha-BOLD correlations, despite only being active for ~15% of the EC runs. State temporal dynamics exhibited strong temporal correlations across neuroimaging modalities.

CM chronic migraine CM → EM previously chronic-now-episodic migraine CNFD corneal nerve fiber density CNFL corneal nerve fiber length EM episodic migraine The cornea is one of the most densely innervated structures in the body, mainly supplied by sensory fibers from the ophthalmic division of the trigeminal nerve—a key player in migraine pathophysiology.1 Previous studies have demonstrated variable differences in the corneal nerve morphology of patients with migraine2-4; therefore, the cornea...

Research Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/pi.6517.