Evidence map›Paper›PMID 30215009›Full record

ArticleClinical neurophysiology practice2018

Influence of placement sites of the active recording electrode on CMAP configuration in the trapezius muscle.

Shoji Hemmi, Katsumi Kurokawa, Taiji Nagai, Akio Asano, Toshio Okamoto, Tatsufumi Murakami, Masahito Mihara, Yoshihide Sunada

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Clinical neurophysiology practice, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.2field-weighted citation impact, top 49% 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

2 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Article
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 at 2 institutions in 1 country.

Shoji HemmiDepartment of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Katsumi KurokawaDepartment of Neurology, Hiroshima City Hiroshima Citizens Hospital, 7-33 Motomachi, Naka-ku, Hiroshima, Hiroshima, Japan.
Taiji NagaiDepartment of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Akio AsanoCentral Laboratory, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Toshio OkamotoCentral Laboratory, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Tatsufumi MurakamiDepartment of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Masahito MiharaDepartment of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Yoshihide SunadaDepartment of Neurology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
Kawasaki Medical School · JPHiroshima City Asa Citizens Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe investigated how the active electrode placement site influences compound muscle action potential (CMAP) configuration of the upper trapezius muscle (TM).

methodsA nerve conduction study of the accessory nerve was performed, and the CMAPs obtained with two different placement sites, i.e., placement of the active recording electrode on the belly of the upper TM (CMAP-

resultsAll CMAPs were recorded from 21 healthy volunteers. The mean peak-to-peak amplitude of CMAP-

conclusionsCMAP of the upper TM was always higher when the active recording electrode was placed 2 cm behind the belly of the muscle. SIGNIFICANCE: When stimulating the accessory nerve, a current spread occurs to the C5 spinal nerve root and another CMAP originating from the supraspinatus muscle occurs in the supraspinous fossa. The volume conduction from the supraspinatus muscle affects the active recording electrode on the TM, resulting in an increase in CMAP amplitude.

Indexed as

Active recording electrodeALS, amyotrophic lateral sclerosisCMAP, compound muscle action potentialCompound muscle action potentialCoV, coefficient of variationCSA, cervical spondylotic amyotrophyNCS, nerve conduction studyNerve conduction studySBMA, spinal–bulbar muscular atrophySD, standard deviationSupraspinatus muscleTM, trapezius muscleTrapezius muscleVolume conduction

Identifiers

PMID30215009
PMCPMC6133916
OpenAlexW2788516694

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.