Evidence map›Paper›PMID 29693304›Full record

ArticleHuman brain mapping2018

Detailed view on slow sinusoidal, hemodynamic oscillations on the human brain cortex by Fourier transforming oxy/deoxy hyperspectral images.

H J Noordmans, D van Blooijs, J C W Siero, J J M Zwanenburg, J H G M Klaessens, N F Ramsey

Abstract read
In one paragraph

Article in Human brain mapping, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Hyperspectral Imaging and the Retina: Worth the Wave?Translational vision science & technology · 2020
    Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. High-resolution vasomotion analysis reveals novel arteriole physiological features and progressive modulation of cerebral vascular networks by stroke.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. The enigma of infra-slow fluctuations in the human EEG.Frontiers in human neuroscience · 2022
    Article
  12. Review
  13. Article
  14. Article
  15. Article
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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.

H J NoordmansFB Medical Technology and Clinical Physics, University Medical Center Utrecht, The Netherlands.ORCID 0000-0002-9913-4556
D van BlooijsDepartment of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands.ORCID 0000-0002-7998-414X
J C W SieroDepartment of Radiology, University Medical Center Utrecht, The Netherlands.ORCID 0000-0001-5079-2868
J J M ZwanenburgDepartment of Radiology, University Medical Center Utrecht, The Netherlands.ORCID 0000-0002-4282-5719
J H G M KlaessensDepartment of Physics and Medical Technology, VU University Medical Center, Amsterdam, The Netherlands.
N F RamseyDepartment of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands.ORCID 0000-0002-7136-259X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Slow sinusoidal, hemodynamic oscillations (SSHOs) around 0.1 Hz are frequently seen in mammalian and human brains. In four patients undergoing epilepsy surgery, subtle but robust fluctuations in oxy- and deoxyhemoglobin were detected using hyperspectral imaging of the cortex. These SSHOs were stationary during the entire 4 to 10 min acquisition time. By Fourier filtering the oxy- and deoxyhemoglobin time signals with a small bandwidth, SSHOs became visible within localized regions of the brain, with distinctive frequencies and a continuous phase variation within that region. SSHOs of deoxyhemoglobin appeared to have an opposite phase and 11% smaller amplitude with respect to the oxyhemoglobin SSHOs. Although the origin of SSHOs remains unclear, we find indications that the observed SSHOs may embody a local propagating hemodynamic wave with velocities in line with capillary blood velocities, and conceivably related to vasomotion and maintenance of adequate tissue perfusion. Hyperspectral imaging of the human cortex during surgery allow in-depth characterization of SSHOs, and may give further insight in the nature and potential (clinical) use of SSHOs.

Indexed as

Cerebrovascular CirculationAdolescentBrain WavesCerebral CortexEpilepsyFemaleFourier AnalysisFunctional NeuroimagingHemoglobinometryHemoglobinsHumansImage Processing, Computer-AssistedIntraoperative PeriodMaleOxyhemoglobinsSpectrophotometryHemoglobinsOxyhemoglobinscerebral cortexepilepsyhemodynamicshemoglobinshumans

Identifiers

PMID29693304
PMCPMC6099526

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.