Evidence map›Paper›PMID 26366748›Full record

ArticleHuman brain mapping2015

Neural correlates of temporal summation of second pain in the human brainstem and spinal cord.

Rachael L Bosma, Elham Ameli Mojarad, Lawrence Leung, Caroline Pukall, Roland Staud, Patrick W Stroman

Open access · bronzeAbstract read
In one paragraph

Article in Human brain mapping, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 7% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

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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

6 authors at 2 institutions in 2 countries.

Rachael L BosmaCentre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.
Elham Ameli MojaradCentre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.
Lawrence LeungCentre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.
Caroline PukallDepartment of Psychology, Queen's University, Kingston, Ontario, Canada.
Roland StaudDepartment of Medicine, University of Florida, Gainesville, Florida.
Patrick W StromanCentre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.
Queen's University · CAUniversity of Florida · US

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Temporal summation of second pain (TSSP) occurs when painful stimuli are presented repetitively (≥ 0.33 Hz) and results from a C-fibre evoked enhancement (or "wind-up") of the dorsal horn neurons. Based on electrophysiological studies in intact animals, windup is considered a purely central phenomenon. With advancements in functional MRI (fMRI), we can now probe the central mechanisms of this pain response in humans. The aim of this study is to characterize the fMRI responses in the healthy human brainstem and spinal cord that correspond to TSSP. Functional MRI of healthy female adults (N = 15) was conducted while brief, repetitive heat pain stimuli were applied to the right thenar eminence (C6 dermatome), and TSSP (0.33 Hz) and control (0.17 Hz) heat pain paradigms were employed. The stimulus intensity was adjusted to each participant's heat pain sensitivity. Data were analyzed by means of a general linear model, and region-of-interest analyses. As predicted, participants demonstrated significant behavioural summation of pain in the TSSP condition. FMRI results identified enhanced activity in the spinal cord dorsal horn at C6 in response to the TSSP condition. Additionally, multiple areas of the brainstem (RVM and PAG) showed greater responses with the TSSP condition. These results suggest that, in humans, increased pain perception in the TSSP condition is reflected by greater responses in the dorsal horn and in regions known to play a role in the descending modulation of pain, which may modulate the spinal cord response.

Indexed as

Brain MappingAdultAfferent PathwaysAnalysis of VarianceBrain StemFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMiddle AgedNerve Fibers, UnmyelinatedOxygenPainPain MeasurementPain ThresholdReaction TimeOxygenbrainstemfMRIhumansecond painspinal cordtemporal summationwindup

Identifiers

PMID26366748
PMCPMC6869075
OpenAlexW2138149213

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.