Evidence map›Paper›PMID 25907415›Full record

ArticleClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2016

Comparison of subdural and subgaleal recordings of cortical high-gamma activity in humans.

Jared D Olson, Jeremiah D Wander, Lise Johnson, Devapratim Sarma, Kurt Weaver, Edward J Novotny, Jeffrey G Ojemann, Felix Darvas

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

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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

8 authors.

Jared D OlsonUniversity of Washington, Department of Rehabilitation Medicine, USA; University of Washington, Center for Sensorimotor Neural Engineering, USA. Electronic address: jaredol@uw.edu.
Jeremiah D WanderUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Bioengineering, USA. Electronic address: jdwander@uw.edu.
Lise JohnsonUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Neurological Surgery, USA. Electronic address: liseaj@uw.edu.
Devapratim SarmaUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Bioengineering, USA. Electronic address: dsarma@uw.edu.
Kurt WeaverUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Radiology, USA. Electronic address: weaverk@uw.edu.
Edward J NovotnyUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Neurology, USA; University of Washington, Department of Pediatrics, USA. Electronic address: ejn4@uw.edu.
Jeffrey G OjemannUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Neurological Surgery, USA; University of Washington, Department of Radiology, USA; University of Washington, Seattle Children's Hospital Division of Neurosurgery, USA. Electronic address: jojemann@u.washington.edu.
Felix DarvasUniversity of Washington, Center for Sensorimotor Neural Engineering, USA; University of Washington, Department of Neurological Surgery, USA. Electronic address: fdarvas@uw.edu.

Funding

Rehabilitation Medicine Scientist Training (RMST) ProgramK12HD001097 · NICHD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BONINGER, MICHAEL L. · 1995 to 2016
$14.1M
Electrocorticography signals for human hand prostheticsR01NS065186 · NINDS · UNIVERSITY OF WASHINGTON · PI OJEMANN, JEFFREY G · 2010 to 2014
$1.6M
Defining the Electrophysiological Dynamics of the Default Mode NetworkK01MH086118 · NIMH · UNIVERSITY OF WASHINGTON · PI WEAVER, KURT E · 2010 to 2014
$707k
NICHD NIH HHS K12 2K12HD001097NICHD NIH HHS K12 HD001097NIDA NIH HHS 5T90DA03243602NIMH NIH HHS K01 MH086118NIMH NIH HHS NIH K01MH08611805NINDS NIH HHS NIH R01 NS065186NINDS NIH HHS R01 NS065186
6 · The paper itself

Abstract

objectiveThe purpose of this study is to determine the relationship between cortical electrophysiological (CE) signals recorded from the surface of the brain (subdural electrocorticography, or ECoG) and signals recorded extracranially from the subgaleal (SG) space.

methodsWe simultaneously recorded several hours of continuous ECoG and SG signals from 3 human pediatric subjects, and compared power spectra of signals between a differential SG montage and several differential ECoG montages to determine the nature of the transfer function between them.

resultsWe demonstrate the presence of CE signals in the SG montage in the high-gamma range (HG, 70-110 Hz), and the transfer function between 70 and 110 Hz is best characterized as a linear function of frequency. We also test an alternative transfer function, i.e. a single pole filter, to test the hypothesis of frequency dependent attenuation in that range, but find this model to be inferior to the linear model.

conclusionsOur findings indicate that SG electrodes are capable of recording HG signals without frequency distortion compared with ECoG electrodes. SIGNIFICANCE: HG signals could be recorded minimally invasively from outside the skull, which could be important for clinical care or brain-computer interface applications.

Indexed as

Electrodes, ImplantedCerebral CortexChildChild, PreschoolElectrocorticographyElectroencephalographyFemaleHumansMaleSubdural SpaceBrain computer interfaceElectrocorticographyElectroencephalographyHigh-gamma brain machine interfaceSubgaleal

Identifiers

PMID25907415
PMCPMC4600028

What OpenQuestion holds

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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.