Evidence map›Paper›PMID 31685634›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2019

The generation and propagation of the human alpha rhythm.

Mila Halgren, István Ulbert, Hélène Bastuji, Dániel Fabó, Lorand Erőss, Marc Rey, Orrin Devinsky, Werner K Doyle, Rachel Mak-McCully, Eric Halgren and 6 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 219 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
219citing papers in PubMed, 3 pooled it
21.3field-weighted citation impact, top 1% of its field
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

219 citing papers in PubMed, 3 syntheses or guidelines pooled it, 437 citations in OpenAlex.

  1. Pooled it
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  3. Pooled it
  4. Trial
  5. Effects of heat-treatedFrontiers in nutrition · 2026
    Trial
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  8. At-home limbic-targeted transcranial electrical stimulation during sleep: a feasibility study in healthy adults.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
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  16. 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
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159 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 10 institutions in 3 countries.

Mila HalgrenDepartment of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114; mhalgren@mit.edu.ORCID 0000-0003-2871-741X
István UlbertInstitute of Cognitive Neuroscience and Psychology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest 1051, Hungary.
Hélène BastujiLyon Neuroscience Research Center, Université Claude Bernard, 69100 Villeurbanne, France.ORCID 0000-0002-6690-2707
Dániel FabóEpilepsy Centrum, National Institute of Clinical Neurosciences, 1145 Budapest, Hungary.
Lorand ErőssFaculty of Information Technology and Bionics, Péter Pázmány Catholic University, Budapest 1088, Hungary.
Marc ReyDivision is Institut de Neurosciences des Systèmes, Aix-Marseille Université, 13007 Marseille, France.
Orrin DevinskyComprehensive Epilepsy Center, New York University School of Medicine, New York, NY 10016.
Werner K DoyleComprehensive Epilepsy Center, New York University School of Medicine, New York, NY 10016.
Rachel Mak-McCullyDepartment of Psychology, University of California, Berkeley, CA 94720.
Eric HalgrenDepartment of Neurosciences and Radiology, University of California San Diego, La Jolla, CA 93093.
Lucia WittnerInstitute of Cognitive Neuroscience and Psychology, Research Center for Natural Sciences, Hungarian Academy of Sciences, Budapest 1051, Hungary.
Patrick ChauvelDivision is Institut de Neurosciences des Systèmes, Aix-Marseille Université, 13007 Marseille, France.
Gary HeitDepartment of Neurosurgery, Permanente Medical Group, Redwood City, CA 94063.
Emad EskandarDepartment of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114.
Arnold MandellDepartment of Psychiatry, University of California San Diego, La Jolla, CA 92093.
Sydney S CashDepartment of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114.
Harvard University · USInserm · FRNew York University · USPázmány Péter Catholic University · HUUniversity of California San Diego · USInstitute of Cognitive Neuroscience and Psychology · HUKaiser Permanente Redwood City Medical Center · USOrszágos Idegsebészeti Tudományos Intézet · HUUniversité Claude Bernard Lyon 1 · FRUniversity of California, Berkeley · US

Funding

Neurosciences Graduate Training ProgramT32NS061847 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI Brenda L Bloodgood · 2008 to 2026
$7.7M
Neurophysiology of Human Cortical EpilepsyR01NS062092 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI CASH, SYDNEY S · 2010 to 2021
$4.7M
CRCNS: Integrated Empirical and Multiscale Modeling of Human Sleep SpindlesR01EB009282 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SEJNOWSKI, TERRENCE J · 2008 to 2016
$3.7M
CRCNS: Multiresolution Modeling of Human Thalamocortical Upstates and DownstatesR01MH099645 · NIMH · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HALGREN, ERIC · 2012 to 2016
$1.8M
Seizure focus delineation using spontaneous and stimulus evoked EEG featuresK24NS088568 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI CASH, SYDNEY S · 2015 to 2019
$923k
NIBIB NIH HHS R01 EB009282NIMH NIH HHS R01 MH099645NINDS NIH HHS K24 NS088568NINDS NIH HHS R01 NS062092NINDS NIH HHS T32 NS061847
6 · The paper itself

Abstract

The alpha rhythm is the longest-studied brain oscillation and has been theorized to play a key role in cognition. Still, its physiology is poorly understood. In this study, we used microelectrodes and macroelectrodes in surgical epilepsy patients to measure the intracortical and thalamic generators of the alpha rhythm during quiet wakefulness. We first found that alpha in both visual and somatosensory cortex propagates from higher-order to lower-order areas. In posterior cortex, alpha propagates from higher-order anterosuperior areas toward the occipital pole, whereas alpha in somatosensory cortex propagates from associative regions toward primary cortex. Several analyses suggest that this cortical alpha leads pulvinar alpha, complicating prevailing theories of a thalamic pacemaker. Finally, alpha is dominated by currents and firing in supragranular cortical layers. Together, these results suggest that the alpha rhythm likely reflects short-range supragranular feedback, which propagates from higher- to lower-order cortex and cortex to thalamus. These physiological insights suggest how alpha could mediate feedback throughout the thalamocortical system.

Indexed as

Alpha RhythmCerebral CortexElectrodesElectroencephalographyHumansThalamusalphaintracranial EEGlaminaroscillationsthalamocortical

Identifiers

PMID31685634
PMCPMC6876194
OpenAlexW2987342493

What OpenQuestion holds

Textmetadata
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.