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Article

Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function

1
Department of Human and Animal Physiology, Faculty of Biology, University of Latvia, Jelgavas St.1, LV-1004 Riga, Latvia
2
Biophotonics Laboratory, Institute of Atomic Physics and Spectroscopy, University of Latvia, Jelgavas St. 3, LV-1004 Riga, Latvia
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in Marcinkevics, Z.; Aglinska, A.; Rubins, U.; Mikale, A.; Grabovskis, A. Imaging photoplethysmography for evaluation of cutaneous sensory nerve fiber function. In Proceedings of the 3rd International Conference “Biophotonics-Riga” 2020, LV-1004, Riga, Latvia, 24–25 August 2020.
Academic Editor: Sabina Merlo
Sensors 2021, 21(4), 1272; https://doi.org/10.3390/s21041272
Received: 4 January 2021 / Revised: 6 February 2021 / Accepted: 8 February 2021 / Published: 11 February 2021
About 2% of the world’s population suffers from small nerve fiber dysfunction, neuropathy, which can result in severe pain. This condition is caused by damage to the small nerve fibers and its assessment is challenging, due to the lack of simple and objective diagnostic techniques. The present study aimed to develop a contactless photoplethysmography system using simple instrumentation, for objective and non-invasive assessment of small cutaneous sensory nerve fiber function. The approach is based on the use of contactless photoplethysmography for the characterization of skin flowmotions and topical heating evoked vasomotor responses. The feasibility of the technique was evaluated on volunteers (n = 14) using skin topical anesthesia, which is able to produce temporary alterations of cutaneous nerve fibers function. In the treated skin region in comparison to intact skin: neurogenic and endothelial component of flowmotions decreased by ~61% and 41%, the local heating evoked flare area decreased by ~44%, vasomotor response trend peak and nadir were substantially reduced. The results indicate for the potential of the remote photoplethysmography in the assessment of the cutaneous nerve fiber function. It is believed that in the future this technique could be used in the clinics as an affordable alternative to laser Doppler imaging technique. View Full-Text
Keywords: cutaneous perfusion; remote photoplethysmography; chronic pain; neuropathic pain; pain assessment; cutaneous flowmotions; vasomotor response; topical heating cutaneous perfusion; remote photoplethysmography; chronic pain; neuropathic pain; pain assessment; cutaneous flowmotions; vasomotor response; topical heating
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MDPI and ACS Style

Marcinkevics, Z.; Aglinska, A.; Rubins, U.; Grabovskis, A. Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function. Sensors 2021, 21, 1272. https://doi.org/10.3390/s21041272

AMA Style

Marcinkevics Z, Aglinska A, Rubins U, Grabovskis A. Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function. Sensors. 2021; 21(4):1272. https://doi.org/10.3390/s21041272

Chicago/Turabian Style

Marcinkevics, Zbignevs, Alise Aglinska, Uldis Rubins, and Andris Grabovskis. 2021. "Remote Photoplethysmography for Evaluation of Cutaneous Sensory Nerve Fiber Function" Sensors 21, no. 4: 1272. https://doi.org/10.3390/s21041272

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