Evidence map›Paper›PMID 35050851›Full record

ArticleeLife2022

Human interictal epileptiform discharges are bidirectional traveling waves echoing ictal discharges.

Elliot H Smith, Jyun-You Liou, Edward M Merricks, Tyler Davis, Kyle Thomson, Bradley Greger, Paul House, Ronald G Emerson, Robert Goodman, Guy M McKhann and 3 more

Abstract read
In one paragraph

Article in eLife, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Traveling-wave transcranial alternating current stimulation (twtACS) causally links neural timing to cognitive function.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Hierarchical Flows of Human Cortical Activity.bioRxiv : the preprint server for biology · 2026
    Article
  9. Article
  10. Article
  11. Toward Unified Biomarkers for Focal Epilepsy.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Macroscale Traveling Waves Evoked by Single-Pulse Stimulation of the Human Brain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  17. Article
  18. Article
  19. Chemogenetics with PSAMGene therapy · 2025
    Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Elliot H SmithDepartments of Neurosurgery and Biomedical Engineering, University of Utah, Salt Lake City, United States.ORCID 0000-0003-4323-4643
Jyun-You LiouDepartment of Anesthesiology, Weill Cornell Medicine, New York CIty, United States.ORCID 0000-0003-4851-3676
Edward M MerricksDepartment of Neurology, Columbia University, New York, United States.ORCID 0000-0001-8172-3152
Tyler DavisDepartments of Neurosurgery and Biomedical Engineering, University of Utah, Salt Lake City, United States.
Kyle ThomsonDepartment of Pharmacology & Toxicology, University of Utah, Salt Lake City, United States.
Bradley GregerDepartment of Bioengineering, Arizona State University, Tempe, United States.
Paul HouseNeurosurgical Associates, LLC, Murray, United States.
Ronald G EmersonHospital for Special Surgery, New York, United States.
Robert GoodmanLenox Hill Hospital, New York, United States.
Guy M McKhannDepartment of Neurological Surgery, Columbia University Medical Center, New York, United States.
Sameer ShethDepartment of Neurological Surgery, Baylor College of Medicine, Houston, United States.
Catherine SchevonDepartment of Neurology, Columbia University, New York, United States.ORCID 0000-0002-4485-7933
John D RolstonDepartments of Neurosurgery and Biomedical Engineering, University of Utah, Salt Lake City, United States.ORCID 0000-0002-8843-5468

Funding

Seizure localization in humans: the effect of inhibitory surround on the EEGR01NS084142 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI SCHEVON, CATHERINE A · 2013 to 2022
$6.0M
Patient-Specific Modeling and Network Perturbation to Enhance the Predictability of Direct Cortical Stimulation for EpilepsyK23NS114178 · NINDS · UNIVERSITY OF UTAH · PI ROLSTON, JOHN D · 2019 to 2023
$961k
Propagation patterns of microelectrode-recorded human interictal dischargesR21NS113031 · NINDS · UNIVERSITY OF UTAH · PI ROLSTON, JOHN D · 2019 to 2019
$427k
Integrated Multiscale Data Acquisition System for Human Intracranial NeurophysiolS10OD018211 · OD · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI SCHEVON, CATHERINE A · 2014 to 2014
$322k
NIH HHS S10 OD018211NINDS NIH HHS K23 NS114178NINDS NIH HHS R01 NS084142NINDS NIH HHS R21 NS113031
6 · The paper itself

Abstract

Interictal epileptiform discharges (IEDs), also known as interictal spikes, are large intermittent electrophysiological events observed between seizures in patients with epilepsy. Although they occur far more often than seizures, IEDs are less studied, and their relationship to seizures remains unclear. To better understand this relationship, we examined multi-day recordings of microelectrode arrays implanted in human epilepsy patients, allowing us to precisely observe the spatiotemporal propagation of IEDs, spontaneous seizures, and how they relate. These recordings showed that the majority of IEDs are traveling waves, traversing the same path as ictal discharges during seizures, and with a fixed direction relative to seizure propagation. Moreover, the majority of IEDs, like ictal discharges, were bidirectional, with one predominant and a second, less frequent antipodal direction. These results reveal a fundamental spatiotemporal similarity between IEDs and ictal discharges. These results also imply that most IEDs arise in brain tissue outside the site of seizure onset and propagate toward it, indicating that the propagation of IEDs provides useful information for localizing the seizure focus.

Indexed as

AdultBrain MappingElectroencephalographyEpilepsyFemaleHumansMaleSeizuresYoung Adultcomputational biologyepilepsyfield potentialshumaninterictal epileptiform dischargesneuronsneuroscienceseizuressystems biology

Identifiers

PMID35050851
PMCPMC8813051

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.