A Humeau

Summary

Affiliation: Groupe ISAIP-ESAIP
Country: France

Publications

  1. ncbi Simplified model of laser Doppler signals during reactive hyperaemia
    A Humeau
    Groupe ISAIP ESAIP, Saint Barthélémy d Anjou, France
    Med Biol Eng Comput 38:80-7. 2000
  2. ncbi Multifractality in the peripheral cardiovascular system from pointwise holder exponents of laser Doppler flowmetry signals
    Anne Humeau
    Groupe ISAIP ESAIP, Saint Barthélémy d Anjou, France
    Biophys J 93:L59-61. 2007
  3. ncbi Numerical simulation of laser Doppler flowmetry signals based on a model of nonlinear coupled oscillators. Comparison with real data in the frequency domain
    Anne Humeau
    Groupe ISAIP ESAIP, 49180 Saint Barthelemy d Anjou Cedex, France
    Conf Proc IEEE Eng Med Biol Soc 2007:4068-71. 2007
  4. ncbi Laser Doppler perfusion monitoring and imaging: novel approaches
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, Saint Barthélemy d Anjou Cedex, France
    Med Biol Eng Comput 45:421-35. 2007
  5. ncbi Lyapunov exponents of laser Doppler flowmetry signals in healthy and type 1 diabetic subjects
    Anne Humeau
    Groupe ISAIP ESAIP, BP 80022, 49180, Saint Barthélemy d Anjou Cedex, France
    Ann Biomed Eng 33:1574-81. 2005
  6. ncbi Wavelet de-noising of laser Doppler reactive hyperemia signals to diagnose peripheral arterial occlusive diseases
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    IEEE Trans Biomed Eng 49:1369-71. 2002
  7. ncbi Spectral components of laser Doppler flowmetry signals recorded in healthy and type 1 diabetic subjects at rest and during a local and progressive cutaneous pressure application: scalogram analyses
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 49:3957-70. 2004
  8. ncbi Time-frequency analysis of laser Doppler flowmetry signals recorded in response to a progressive pressure applied locally on anaesthetized healthy rats
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 49:843-57. 2004
  9. ncbi Signal processing methodology to study the cutaneous vasodilator response to a local external pressure application detected by laser Doppler flowmetry
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    IEEE Trans Biomed Eng 51:190-2. 2004
  10. ncbi Comparison between Hilbert-Huang transform and scalogram methods on non-stationary biomedical signals: application to laser Doppler flowmetry recordings
    Rémy Roulier
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 50:5189-202. 2005

Detail Information

Publications21

  1. ncbi Simplified model of laser Doppler signals during reactive hyperaemia
    A Humeau
    Groupe ISAIP ESAIP, Saint Barthélémy d Anjou, France
    Med Biol Eng Comput 38:80-7. 2000
    ..Moreover, the rapidity of the vasodilatation and vasoconstriction effects determine the rapidity of the signal variations. The paper aims to give a basic solution to develop a numerical model...
  2. ncbi Multifractality in the peripheral cardiovascular system from pointwise holder exponents of laser Doppler flowmetry signals
    Anne Humeau
    Groupe ISAIP ESAIP, Saint Barthélémy d Anjou, France
    Biophys J 93:L59-61. 2007
    ..We show that the theoretical model, although it captures basic features of the dynamics, is not complex enough to reflect the multifractal irregularities of microvascular mechanisms...
  3. ncbi Numerical simulation of laser Doppler flowmetry signals based on a model of nonlinear coupled oscillators. Comparison with real data in the frequency domain
    Anne Humeau
    Groupe ISAIP ESAIP, 49180 Saint Barthelemy d Anjou Cedex, France
    Conf Proc IEEE Eng Med Biol Soc 2007:4068-71. 2007
    ..Finally, linear couplings seem more adequate than parametric couplings to describe power spectra at frequencies higher than 1 Hz. This work will now serve as a basis to elaborate more powerful models of LDF data...
  4. ncbi Laser Doppler perfusion monitoring and imaging: novel approaches
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, Saint Barthélemy d Anjou Cedex, France
    Med Biol Eng Comput 45:421-35. 2007
    ..Imaging perfusion is also reviewed through methods based on laser speckle. The most prominent disadvantage of the latter devices being the time needed to produce a perfusion image, solutions are proposed in the last part of the paper...
  5. ncbi Lyapunov exponents of laser Doppler flowmetry signals in healthy and type 1 diabetic subjects
    Anne Humeau
    Groupe ISAIP ESAIP, BP 80022, 49180, Saint Barthélemy d Anjou Cedex, France
    Ann Biomed Eng 33:1574-81. 2005
    ..0625 for the four LEs of highest absolute value. Because these differences arise from abnormalities in microvascular blood flow, they may help to explain the high prevalence of type 1 diabetic patients developing foot ulcers...
  6. ncbi Wavelet de-noising of laser Doppler reactive hyperemia signals to diagnose peripheral arterial occlusive diseases
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    IEEE Trans Biomed Eng 49:1369-71. 2002
    ..Results are presented on recordings acquired on patients suffering from PAOD and on healthy subjects...
  7. ncbi Spectral components of laser Doppler flowmetry signals recorded in healthy and type 1 diabetic subjects at rest and during a local and progressive cutaneous pressure application: scalogram analyses
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 49:3957-70. 2004
    ..These results may improve knowledge on cutaneous microvascular responses to injuries or local pressures initiating diabetic complications...
  8. ncbi Time-frequency analysis of laser Doppler flowmetry signals recorded in response to a progressive pressure applied locally on anaesthetized healthy rats
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 49:843-57. 2004
    ..These results and others obtained on patients, such as diabetics, could increase the understanding of some cutaneous pathologies involved in various neurological diseases and in the pathophysiology of decubitus ulcers...
  9. ncbi Signal processing methodology to study the cutaneous vasodilator response to a local external pressure application detected by laser Doppler flowmetry
    Anne Humeau
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    IEEE Trans Biomed Eng 51:190-2. 2004
    ..Temporal variations of laser Doppler signals rhythmic activities are first analyzed on anesthetized rats. The results lead to a method that provides a better PIV understanding...
  10. ncbi Comparison between Hilbert-Huang transform and scalogram methods on non-stationary biomedical signals: application to laser Doppler flowmetry recordings
    Rémy Roulier
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 50:5189-202. 2005
    ..These results may improve knowledge on the above-mentioned reflex as well as on non-stationary biomedical signal processing methods...
  11. ncbi Physiological effects of indomethacin and celecobix: an S-transform laser Doppler flowmetry signal analysis
    S Assous
    Groupe ISAIP ESAIP, 18, rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 50:1951-9. 2005
    ..The work therefore proves that these drugs do not affect these physiological activities. For future physiological studies, there will therefore be no need to exclude patients having taken cyclo-oxygenase 1 inhibitions...
  12. ncbi Multifractality, sample entropy, and wavelet analyses for age-related changes in the peripheral cardiovascular system: preliminary results
    Anne Humeau
    Groupe esaip, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthélémy d Anjou, France
    Med Phys 35:717-23. 2008
    ..19 for subjects between 60 and 70 years old. Our results could assist in gaining knowledge on the relationship between microvascular system status and age and could also lead to a more accurate age-related nonlinear modeling...
  13. ncbi Generalized fractal dimensions of laser Doppler flowmetry signals recorded from glabrous and nonglabrous skin
    Benjamin Buard
    Groupe esaip, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Med Phys 37:2827-36. 2010
    ..Glabrous zones are physiologically different from the others partly due to the presence of a high density of arteriovenous anastomoses...
  14. ncbi Depth sensitivity analysis of functional near-infrared spectroscopy measurement using three-dimensional Monte Carlo modelling-based magnetic resonance imaging
    Chemseddine Mansouri
    Laboratoire Procédés Matériaux Instrumentation LPMI EA 1427, Arts et Métiers Paris Tech, BP 93525 Angers, France
    Lasers Med Sci 25:431-8. 2010
    ..It was shown that the signal detected in brain function measurements was greatly affected by the heterogeneity of the head tissue and its scattering properties, particularly for the shorter interfibre distances...
  15. ncbi Fisher information and Shannon entropy for on-line detection of transient signal high-values in laser Doppler flowmetry signals of healthy subjects
    Anne Humeau
    Groupe esaip, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Phys Med Biol 53:5061-76. 2008
    ..Moreover, the real-time algorithm has the advantage of being easy to implement and does not require any frequency analysis. This study opens new fields of application for Fisher information and Shannon entropy: LDF 'denoising'...
  16. ncbi Time and spatial invariance of impedance signals in limbs of healthy subjects by time-frequency analysis
    Mathieu Collette
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, Saint Barthélemy d Anjou Cedex, 49180, France
    Ann Biomed Eng 36:444-51. 2008
    ..Moreover, the results on the spatial invariance make possible the comparisons of these parameters with those given by other acquisition techniques...
  17. ncbi S-transform applied to laser Doppler flowmetry reactive hyperemia signals
    Said Assous
    Groupe ISAIP ESAIP, Saint Barthélémy d Anjou, France
    IEEE Trans Biomed Eng 53:1032-7. 2006
    ..The mechanisms that take place during reactive hyperemia are, therefore, local. The S-transform proves to be a suited time-frequency method, in order to analyze laser Doppler signal underlying mechanisms...
  18. ncbi In vivo comparison between the principal components analysis and the Karhunen-Loève transform as methods used for the de-noising of laser Doppler reactive hyperemia signals
    Chemseddine Mansouri
    Groupe ISAIP ESAIP, 49180 Saint Barthélémy d Anjou, France
    Conf Proc IEEE Eng Med Biol Soc 2007:5465-8. 2007
    ..However, the principal components analysis method is more justified when one or several of the initial data present variances either too insignificant or too important in comparison with the other data...
  19. ncbi Modeling and interpretation of the bioelectrical impedance signal for the determination of the local arterial stiffness
    Mathieu Collette
    Groupe esaip, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Med Phys 36:4340-8. 2009
    ..However, this method suffers from several drawbacks and it remains limited in clinical routine...
  20. ncbi Multifractal analysis of central (electrocardiography) and peripheral (laser Doppler flowmetry) cardiovascular time series from healthy human subjects
    Anne Humeau
    Groupe esaip, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France Laboratoire d Ingénierie des Systèmes Automatisés LISA, Universite d Angers, 62 avenue Notre Dame du Lac, 49000 Angers, France
    Physiol Meas 30:617-29. 2009
    ..Various conditions for LDF acquisitions are tested showing larger multifractal spectra for signals recorded on fingers than on forearms. The results uncover complex interactions at central and peripheral CVS levels...
  21. ncbi Effects of residual fluorescence on time-resolved signals simulated with the finite element method in biological tissues
    Marine Kervella
    Groupe ISAIP ESAIP, 18 rue du 8 mai 1945, BP 80022, 49180 Saint Barthelemy d Anjou Cedex, France
    Conf Proc IEEE Eng Med Biol Soc 2007:5976-9. 2007
    ..We show the limits of the subtracting method for low target: background fluorescent absorption contrast by extracting the time to reach the half maximum and analyzing the maximum of the time-resolved signals versus target depth...