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Here, we investigated how electrophysiological connectivity relates to both static and dynamic fMRI connectivity using simultaneous intracranial EEG (icEEG)\u2013fMRI recordings from 48 adults with focal epilepsy. Linear mixed\u2010effects models were applied to sampled electrode\u2010pair connections to examine frequency\u2010resolved associations between band\u2010limited icEEG connectivity and corresponding fMRI FC within non\u2010epileptogenic brain regions. Time\u2010averaged icEEG connectivity was robustly associated with spatial variation in static fMRI connectivity across sampled connections and frequency bands, with strongest effects in the beta and low\u2010gamma ranges. At the window level, dynamic fMRI connectivity showed significant positive associations with window\u2010specific icEEG FC deviations in the alpha, beta, and low\u2010gamma bands. Exploratory spatial stratification suggested that cross\u2010modal coupling varied across clinically sampled frontal, temporal, and insular region pairs, and the main findings remained robust after motion\u2010control analyses. Together, these findings indicate that resting\u2010state fMRI connectivity is associated with both average electrophysiological coupling across sampled connections and window\u2010level fluctuations in electrophysiological connectivity, with the strongest primary band\u2010wise evidence observed in the alpha, beta, and low\u2010gamma ranges.<\/jats:p>","DOI":"10.1002\/hbm.70646","type":"journal-article","created":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T10:41:25Z","timestamp":1790764885000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Static and Dynamic Resting\u2010State\n                    <scp>fMRI<\/scp>\n                    Connectivity Show Frequency\u2010Resolved Associations With Intracranial\n                    <scp>EEG<\/scp>\n                    Connectivity"],"prefix":"10.1002","volume":"47","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-2601-7590","authenticated-orcid":false,"given":"Tahereh","family":"Rashnavadi","sequence":"first","affiliation":[{"name":"Department of Radiology University of Calgary  Calgary Canada"},{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristina","family":"Sabaroedin","sequence":"additional","affiliation":[{"name":"Department of Radiology University of Calgary  Calgary Canada"},{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"},{"name":"Department of Paediatrics University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William","family":"Wilson","sequence":"additional","affiliation":[{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"},{"name":"Department of Clinical Neurosciences University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel J.","family":"Pittman","sequence":"additional","affiliation":[{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"},{"name":"Department of Clinical Neurosciences University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9555-3569","authenticated-orcid":false,"given":"Paolo","family":"Federico","sequence":"additional","affiliation":[{"name":"Department of Radiology University of Calgary  Calgary Canada"},{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"},{"name":"Department of Clinical Neurosciences University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pierre","family":"Levan","sequence":"additional","affiliation":[{"name":"Department of Radiology University of Calgary  Calgary Canada"},{"name":"Hotchkiss Brain Institute University of Calgary  Calgary Canada"},{"name":"Seaman Family MR Research Centre University of Calgary  Calgary Canada"},{"name":"Alberta Children's Hospital Research Institute University of Calgary  Calgary Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,30]]},"reference":[{"key":"e_1_2_12_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nicl.2015.03.002"},{"key":"e_1_2_12_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/cercor\/bhs352"},{"key":"e_1_2_12_4_1","doi-asserted-by":"publisher","DOI":"10.1006\/nimg.2000.0599"},{"key":"e_1_2_12_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.compbiomed.2018.12.005"},{"key":"e_1_2_12_6_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnsys.2015.00175"},{"key":"e_1_2_12_7_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0020071"},{"key":"e_1_2_12_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroimage.2012.01.016"},{"key":"e_1_2_12_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910340409"},{"key":"e_1_2_12_10_1","doi-asserted-by":"publisher","DOI":"10.3171\/FOC\/2008\/25\/9\/E18"},{"key":"e_1_2_12_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroimage.2015.08.052"},{"key":"e_1_2_12_12_1","doi-asserted-by":"crossref","unstructured":"Calhoun V. 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