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Continuous wavelet transform of laser-Doppler signals from facial microcirculation reveals vasomotion asymmetry.

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Continuous wavelet transform of laser-Doppler signals from facial microcirculation reveals vasomotion asymmetry. / Benedičič, Mitja; Bernjak, Alan; Stefanovska, Aneta; Bošnjak, Roman.

In: Microvascular Research, Vol. 74, No. 1, 07.2007, p. 45-50.

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Benedičič, Mitja ; Bernjak, Alan ; Stefanovska, Aneta ; Bošnjak, Roman. / Continuous wavelet transform of laser-Doppler signals from facial microcirculation reveals vasomotion asymmetry. In: Microvascular Research. 2007 ; Vol. 74, No. 1. pp. 45-50.

Bibtex

@article{8842442a444e4afc8b3c28a5e9458f8e,
title = "Continuous wavelet transform of laser-Doppler signals from facial microcirculation reveals vasomotion asymmetry.",
abstract = "Facial laser Doppler flux (FLDF) consists of a mean value and complex oscillatory components called vasomotion. Vasomotion can be expressed as spectral amplitudes (SA) after the application of continuous wavelet transform. Vasomotion is influenced by cardiac activity (frequency interval I), respiration (interval II), intrinsic myogenic activity (interval III), neural mechanisms (interval IV) and endothelial mechanisms (intervals V and VI). Asymmetry of FLDF mean value was previously documented and hereby we present homogeneity assessment for FLDF vasomotion. Mean FLDF ( p<0.001), total SA ( p<0.001) and SA within frequency intervals I–VI were significantly higher in both cheeks compared to forehead. Total SA ( p=0.009) and SA within frequency intervals I (p=0.041), II (p=0.005), III (p=0.009), IV (p=0.001) and V (p=0.036) were significantly higher in right than in left forehead. Human face is a heterogeneous microvascular region. Angiographic characteristics of deep horizontal sub-dermal plexus, endothelial and vascular smooth muscle cell heterogeneity, and plasticity of the microvasculature, autonomic asymmetry and facial neuropsychological asymmetry are possible causes of microvascular asymmetry. The origin and significance of microvascular imbalance need to be elucidated further.",
keywords = "Face, Laser-Doppler flowmetry, Microcirculation, Skin blood flow",
author = "Mitja Benedi{\v c}i{\v c} and Alan Bernjak and Aneta Stefanovska and Roman Bo{\v s}njak",
year = "2007",
month = jul,
doi = "10.1016/j.mvr.2007.02.007",
language = "English",
volume = "74",
pages = "45--50",
journal = "Microvascular Research",
issn = "0026-2862",
publisher = "Academic Press Inc.",
number = "1",

}

RIS

TY - JOUR

T1 - Continuous wavelet transform of laser-Doppler signals from facial microcirculation reveals vasomotion asymmetry.

AU - Benedičič, Mitja

AU - Bernjak, Alan

AU - Stefanovska, Aneta

AU - Bošnjak, Roman

PY - 2007/7

Y1 - 2007/7

N2 - Facial laser Doppler flux (FLDF) consists of a mean value and complex oscillatory components called vasomotion. Vasomotion can be expressed as spectral amplitudes (SA) after the application of continuous wavelet transform. Vasomotion is influenced by cardiac activity (frequency interval I), respiration (interval II), intrinsic myogenic activity (interval III), neural mechanisms (interval IV) and endothelial mechanisms (intervals V and VI). Asymmetry of FLDF mean value was previously documented and hereby we present homogeneity assessment for FLDF vasomotion. Mean FLDF ( p<0.001), total SA ( p<0.001) and SA within frequency intervals I–VI were significantly higher in both cheeks compared to forehead. Total SA ( p=0.009) and SA within frequency intervals I (p=0.041), II (p=0.005), III (p=0.009), IV (p=0.001) and V (p=0.036) were significantly higher in right than in left forehead. Human face is a heterogeneous microvascular region. Angiographic characteristics of deep horizontal sub-dermal plexus, endothelial and vascular smooth muscle cell heterogeneity, and plasticity of the microvasculature, autonomic asymmetry and facial neuropsychological asymmetry are possible causes of microvascular asymmetry. The origin and significance of microvascular imbalance need to be elucidated further.

AB - Facial laser Doppler flux (FLDF) consists of a mean value and complex oscillatory components called vasomotion. Vasomotion can be expressed as spectral amplitudes (SA) after the application of continuous wavelet transform. Vasomotion is influenced by cardiac activity (frequency interval I), respiration (interval II), intrinsic myogenic activity (interval III), neural mechanisms (interval IV) and endothelial mechanisms (intervals V and VI). Asymmetry of FLDF mean value was previously documented and hereby we present homogeneity assessment for FLDF vasomotion. Mean FLDF ( p<0.001), total SA ( p<0.001) and SA within frequency intervals I–VI were significantly higher in both cheeks compared to forehead. Total SA ( p=0.009) and SA within frequency intervals I (p=0.041), II (p=0.005), III (p=0.009), IV (p=0.001) and V (p=0.036) were significantly higher in right than in left forehead. Human face is a heterogeneous microvascular region. Angiographic characteristics of deep horizontal sub-dermal plexus, endothelial and vascular smooth muscle cell heterogeneity, and plasticity of the microvasculature, autonomic asymmetry and facial neuropsychological asymmetry are possible causes of microvascular asymmetry. The origin and significance of microvascular imbalance need to be elucidated further.

KW - Face

KW - Laser-Doppler flowmetry

KW - Microcirculation

KW - Skin blood flow

U2 - 10.1016/j.mvr.2007.02.007

DO - 10.1016/j.mvr.2007.02.007

M3 - Journal article

VL - 74

SP - 45

EP - 50

JO - Microvascular Research

JF - Microvascular Research

SN - 0026-2862

IS - 1

ER -