Evidence map›Paper›PMID 29167419›Full record

ArticleNature communications2017

Widespread theta synchrony and high-frequency desynchronization underlies enhanced cognition.

E A Solomon, J E Kragel, M R Sperling, A Sharan, G Worrell, M Kucewicz, C S Inman, B Lega, K A Davis, J M Stein and 5 more

Abstract read
In one paragraph

Article in Nature communications, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 3 pooled it
–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

118 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Effects of transcranial alternating current stimulation on cognitive function in older adults: a systematic review and meta-analysis of randomized controlled trials.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Hippocampal CA1 gamma power predicts the precision of spatial memory judgments.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Trial
  6. Article
  7. Article
  8. Concept Cells and the Neural Bases of Human Memory.Acta physiologica (Oxford, England) · 2026
    Review
  9. Quantum-inspired entanglement between collaborating brains during human memory encoding.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  10. Medial Pulvinar Nucleus as a Causal Hub for Heteromodal Naming.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  11. Article
  12. Article
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  15. Preoperative network activity predicts the response to subthalamic DBS for Parkinson's disease.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Article
  16. Phase Consistency Dynamics of Memory Encoding.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article

58 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

15 authors.

E A SolomonDepartment of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA. esolo@pennmedicine.upenn.edu.ORCID http://orcid.org/0000-0003-0541-7588
J E KragelDepartment of Psychology, University of Pennsylvania, Philadelphia, PA, 19104, USA.
M R SperlingDepartment of Neurology, Thomas Jefferson University Hospital, Philadelphia, PA, 19107, USA.
A SharanDepartment of Neurosurgery, Thomas Jefferson University Hospital, Philadelphia, PA, 19107, USA.
G WorrellDepartment of Neurology, Department of Physiology and Bioengineering, Mayo Clinic, Rochester, MN, 55905, USA.
M KucewiczDepartment of Neurology, Department of Physiology and Bioengineering, Mayo Clinic, Rochester, MN, 55905, USA.
C S InmanDepartment of Neurosurgery, Emory School of Medicine, Atlanta, GA, 30322, USA.
B LegaDepartment of Neurosurgery, University of Texas Southwestern, Dallas, TX, 75390, USA.
K A DavisDepartment of Neurology, Hospital of the University of Pennsylvania, Philadelphia, PA, 19104, USA.
J M SteinDepartment of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, 19104, USA.
B C JobstDepartment of Neurology, Dartmouth Medical Center, Lebanon, NH, 03756, USA.
K A ZaghloulSurgical Neurology Branch, National Institutes of Health, Bethesda, MD, 20814, USA.
S A ShethDepartment of Neurosurgery, Columbia University Medical Center, New York, NY, 10032, USA.
D S RizzutoDepartment of Psychology, University of Pennsylvania, Philadelphia, PA, 19104, USA.
M J KahanaDepartment of Psychology, University of Pennsylvania, Philadelphia, PA, 19104, USA. kahana@psych.upenn.edu.

Funding

Investigating the neural mechanisms of human cognitive function through intracranial recordingsZIANS003144 · NINDS · NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE · PI ZAGHLOUL, KAREEM · 2014 to 2025
$36.1M
Associative Processes in Episodic MemoryR01MH055687 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI KAHANA, MICHAEL JACOB · 2002 to 2024
$7.9M
Training Program in Neuroengineering and MedicineT32NS091006 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI Brian Litt · 2015 to 2026
$4.1M
Virtual Resection to Treat EpilepsyR01NS099348 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI BASSETT, DANIELLE SMITH, LITT, BRIAN · 2016 to 2019
$2.3M
NIMH NIH HHS R01 MH055687NINDS NIH HHS R01 NS099348NINDS NIH HHS T32 NS091006
6 · The paper itself

Abstract

The idea that synchronous neural activity underlies cognition has driven an extensive body of research in human and animal neuroscience. Yet, insufficient data on intracranial electrical connectivity has precluded a direct test of this hypothesis in a whole-brain setting. Through the lens of memory encoding and retrieval processes, we construct whole-brain connectivity maps of fast gamma (30-100 Hz) and slow theta (3-8 Hz) spectral neural activity, based on data from 294 neurosurgical patients fitted with indwelling electrodes. Here we report that gamma networks desynchronize and theta networks synchronize during encoding and retrieval. Furthermore, for nearly all brain regions we studied, gamma power rises as that region desynchronizes with gamma activity elsewhere in the brain, establishing gamma as a largely asynchronous phenomenon. The abundant phenomenon of theta synchrony is positively correlated with a brain region's gamma power, suggesting a predominant low-frequency mechanism for inter-regional communication.

Indexed as

AnimalsBrainCognitionConnectomeElectroencephalography Phase SynchronizationGamma RhythmHumansMemoryMental RecallTheta Rhythm

Identifiers

PMID29167419
PMCPMC5700170

What OpenQuestion holds

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Registered trials

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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.