Evidence map›Paper›PMID 17658272›Full record

ArticleNeuroImage2007

A novel integrated MEG and EEG analysis method for dipolar sources.

Ming-Xiong Huang, Tao Song, Donald J Hagler, Igor Podgorny, Veikko Jousmaki, Li Cui, Kathleen Gaa, Deborah L Harrington, Anders M Dale, Roland R Lee and 2 more

Abstract readEvaluation Study
In one paragraph

Article in NeuroImage, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

47 citing papers in PubMed, 110 citations in OpenAlex.

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  7. Two mechanisms facilitate regional independence between brain regions based on an examination of alpha-band activity in healthy control adult males.International journal of psychophysiology : official journal of the International Organization of Psychophysiology · 2022
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  14. Neural dynamics of semantic composition.Proceedings of the National Academy of Sciences of the United States of America · 2019
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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

12 authors at 2 institutions in 1 country.

Ming-Xiong HuangDepartment of Radiology, University of California, San Diego, San Diego, CA 92121, USA. mxhuang@ucsd.edu
Tao Song
Donald J Hagler
Igor Podgorny
Veikko Jousmaki
Li Cui
Kathleen Gaa
Deborah L Harrington
Anders M Dale
Roland R Lee
Jeff Elman
Eric Halgren
University of California, San Diego · USVA San Diego Healthcare System · US

Funding

Spatiotemporal Brain Imaging: Microscopic &System LevelR01EB000790 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI DALE, ANDERS M · 2002 to 2015
$15.3M
NEURAL BASIS OF ENDOGENOUS POTENTIALS IN HUMANSR01NS018741 · NINDS · UNIVERSITY OF UTAH · PI HALGREN, ERIC · 1985 to 2011
$5.8M
Neural-Electromagnetic-Hemodynamic Links in HumansR01NS044623 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HALGREN, ERIC · 2003 to 2006
$1.5M
EXPECTATION GENERATION IN SENTENCE PROCESSINGR01HD053136 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ELMAN, JEFFREY L · 2007 to 2011
$1.3M
NIBIB NIH HHS R01 EB000790NIBIB NIH HHS R01-EB00790NICHD NIH HHS R01 HD053136NICHD NIH HHS R01-HD053136NINDS NIH HHS R01 NS018741NINDS NIH HHS R01 NS044623NINDS NIH HHS R01-NS18741NINDS NIH HHS R01-NS44623
6 · The paper itself

Abstract

The ability of magnetoencephalography (MEG) to accurately localize neuronal currents and obtain tangential components of the source is largely due to MEG's insensitivity to the conductivity profile of the head tissues. However, MEG cannot reliably detect the radial component of the neuronal current. In contrast, the localization accuracy of electroencephalography (EEG) is not as good as MEG, but EEG can detect both the tangential and radial components of the source. In the present study, we investigated the conductivity dependence in a new approach that combines MEG and EEG to accurately obtain, not only the location and tangential components, but also the radial component of the source. In this approach, the source location and tangential components are obtained from MEG alone, and optimal conductivity values of the EEG model are estimated by best-fitting EEG signal, while precisely matching the tangential components of the source in EEG and MEG. Then, the radial components are obtained from EEG using the previously estimated optimal conductivity values. Computer simulations testing this integrated approach demonstrated two main findings. First, there are well-organized optimal combinations of the conductivity values that provide an accurate fit to the combined MEG and EEG data. Second, the radial component, in addition to the location and tangential components, can be obtained with high accuracy without needing to know the precise conductivity profile of the head. We then demonstrated that this new approach performed reliably in an analysis of the 20-ms component from human somatosensory responses elicited by electric median-nerve stimulation.

Indexed as

AlgorithmsModels, NeurologicalBrainBrain MappingComputer SimulationDiagnosis, Computer-AssistedElectroencephalographyEvoked PotentialsMagnetoencephalographySystems Integration

Identifiers

PMID17658272
PMCPMC2819417
OpenAlexW2124363827

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.