Cited by 236Functional Brain Connectivity StudiesEpilepsy research and treatmentNeural dynamics and brain function

Global and regional functional connectivity maps of neural oscillations in focal epilepsy

Open access
Englot, Dario J., Hinkley, Leighton B., Kort, Naomi S., Imber, Brandon S., Mizuiri, Danielle, Honma, Susanne M., Findlay, Anne M., Garrett, Coleman +7 more·2015·Brain

Abstract

Intractable focal epilepsy is a devastating disorder with profound effects on cognition and quality of life. Epilepsy surgery can lead to seizure freedom in patients with focal epilepsy; however, sometimes it fails due to an incomplete delineation of the epileptogenic zone. Brain networks in epilepsy can be studied with resting-state functional connectivity analysis, yet previous investigations using functional magnetic resonance imaging or electrocorticography have produced inconsistent results. Magnetoencephalography allows non-invasive whole-brain recordings, and can be used to study both long-range network disturbances in focal epilepsy and regional connectivity at the epileptogenic zone. In magnetoencephalography recordings from presurgical epilepsy patients, we examined: (i) global functional connectivity maps in patients versus controls; and (ii) regional functional connectivity maps at the region of resection, compared to the homotopic non-epileptogenic region in the contralateral hemisphere. Sixty-one patients were studied, including 30 with mesial temporal lobe epilepsy and 31 with focal neocortical epilepsy. Compared with a group of 31 controls, patients with epilepsy had decreased resting-state functional connectivity in widespread regions, including perisylvian, posterior temporo-parietal, and orbitofrontal cortices (P < 0.01, t-test). Decreased mean global connectivity was related to longer duration of epilepsy and higher frequency of consciousness-impairing seizures (P < 0.01, linear regression). Furthermore, patients with increased regional connectivity within the resection site (n = 24) were more likely to achieve seizure postoperative seizure freedom (87.5% with Engel I outcome) than those with neutral (n = 15, 64.3% seizure free) or decreased (n = 23, 47.8% seizure free) regional connectivity (P < 0.02, chi-square). Widespread global decreases in functional connectivity are observed in patients with focal epilepsy, and may reflect deleterious long-term effects of recurrent seizures. Furthermore, enhanced regional functional connectivity at the area of resection may help predict seizure outcome and aid surgical planning.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/brain/awv130

Cites

67 of 67 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Approaches integrating electrophysiological source imaging with functional connectivity have been applied to determine epileptic networks with positive results.

    “Such approaches have been applied to determine epileptic networks with positive results indicating the merits of integrating ESI with functional connectivity in mapping brain networks (108, 109).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Englot, D. J., Hinkley, L. B., Kort, N. S., Imber, B. S., Mizuiri, D., Honma, S. M., Findlay, A. M., Garrett, C., Cheung, P. L., Mantle, M., Tarapore, P. E., Knowlton, R. C., Chang, E. F., Kirsch, H. E., & Nagarajan, S. S.
Affiliations
University of California, San Francisco (US)
Venue
Brain
Published
2015-05-16
Volume
138
Issue
8
Pages
2249-2262
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2133288538
Cited by
236
References
66
Citations by year
2026: 11 · 2025: 15 · 2024: 23 · 2023: 23 · 2022: 23 · 2021: 23 · 2020: 29 · 2019: 22 · 2018: 23 · 2017: 21 · 2016: 18 · 2015: 2 · 2014: 1
FWCI
12.82
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (1f32ns086353-01a1)
  • National Institute on Deafness and Other Communication Disorders (R01DC013979)
  • National Institute of Neurological Disorders and Stroke (R21 NS76171, F32-NS086353, R21NS076171)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
focal epilepsy, resting-state functional connectivity, neural oscillations, epileptogenic zone, epilepsy surgery, mesial temporal lobe epilepsy, seizure outcome prediction, Engel classification, seizure duration, magnetoencephalography, surgical planning
MeSH terms
Adult, Brain Mapping, Cerebral Cortex, Electrodes, Implanted, Epilepsies, Partial, Female, Humans, Magnetic Resonance Imaging, Male, Magnetoencephalography, Treatment Outcome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review