Evidence map›Paper›PMID 42889877›Full record

ArticleBiomedical optics express2026

Hyperspectral imaging photoplethysmography: insights into the signals' origin and usage.

Tobias Vogelsang, Vincent Fleischhauer, Alexander Woyczyk, Michael Wellnhofer, Stefan Rasche, Sebastian Zaunseder

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Biomedical optics express, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Tobias VogelsangUniversity of Augsburg, Chair for Diagnostic Sensing, Eichleitnerstr. 30, Augsburg, 86159, Germany.
Vincent FleischhauerUniversity of Augsburg, Chair for Neurorehabilitation, Gutenbergstr. 7, Neusäß, 86356, Germany.
Alexander WoyczykUniversity of Augsburg, Chair for Diagnostic Sensing, Eichleitnerstr. 30, Augsburg, 86159, Germany.
Michael WellnhoferUniversity of Augsburg, Chair for Diagnostic Sensing, Eichleitnerstr. 30, Augsburg, 86159, Germany.
Stefan RascheTechnische Universität Dresden / University Hospital Carl Gustav Carus Dresden, Department of Visceral, Thoracic and Vascular Surgery, Fetscherstr. 74, 01307 Dresden, Germany.
Sebastian ZaunsederUniversity of Augsburg, Chair for Diagnostic Sensing, Eichleitnerstr. 30, Augsburg, 86159, Germany.ORCID https://orcid.org/0000-0001-6114-3142

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This work explores the hyperspectral characteristics of imaging photoplethysmography (iPPG) to (1) deepen the understanding of iPPG signals' origin, and (2) assess iPPG's capacity to capture the peripheral perfusion. Our analyses are based on an experimental study employing a hyperspectral snapshot camera for iPPG and laser speckle contrast imaging (LSCI) at the forearm. We demonstrate a pronounced correlation between the wavelength-dependent normalized AC component from iPPG and the extinction coefficient of oxyhemoglobin (

Identifiers

PMID42889877
PMCPMC13671670

What OpenQuestion holds

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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.