Madeleine M Lowery

Summary

Affiliation: University College Dublin
Country: Ireland

Publications

  1. ncbi request reprint Simulation of intramuscular EMG signals detected using implantable myoelectric sensors (IMES)
    Madeleine M Lowery
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    IEEE Trans Biomed Eng 53:1926-33. 2006
  2. ncbi request reprint Coherence between motor unit discharges in response to shared neural inputs
    Madeleine M Lowery
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin, Ireland
    J Neurosci Methods 163:384-91. 2007
  3. doi request reprint Effect of extracellular potassium accumulation on muscle fiber conduction velocity: a simulation study
    Emma Fortune
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    Ann Biomed Eng 37:2105-17. 2009
  4. doi request reprint Simulation of cortico-basal ganglia oscillations and their suppression by closed loop deep brain stimulation
    Peadar F Grant
    School of Electrical, Electronic and Communications Engineering, University College Dublin, Dublin, Ireland
    IEEE Trans Neural Syst Rehabil Eng 21:584-94. 2013
  5. doi request reprint Application of non-linear control theory to a model of deep brain stimulation
    Clare M Davidson
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2011:6785-8. 2011
  6. doi request reprint Towards a genioglossus surface EMG model of obstructive sleep apnea
    Eric C P Chua
    University College Dublin, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2009:2979-82. 2009
  7. doi request reprint Effect of subthalamic nucleus interconnectivity at deep brain stimulation onset and offset: a simulation study
    Guiyeom Kang
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2011:7107-10. 2011
  8. ncbi request reprint Effect of elbow joint angle on force-EMG relationships in human elbow flexor and extensor muscles
    Emer P Doheny
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Ireland
    J Electromyogr Kinesiol 18:760-70. 2008
  9. doi request reprint Effect of subcutaneous fat thickness and surface electrode configuration during neuromuscular electrical stimulation
    Emer P Doheny
    School of Physiotherapy and Performance Science, University College Dublin, Dublin, Ireland
    Med Eng Phys 32:468-74. 2010
  10. doi request reprint Analysis of the mechanism of action of deep brain stimulation using the concepts of dither injection and the equivalent nonlinearity
    Annraoi M de Paor
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    IEEE Trans Biomed Eng 56:2717-20. 2009

Collaborators

Detail Information

Publications37

  1. ncbi request reprint Simulation of intramuscular EMG signals detected using implantable myoelectric sensors (IMES)
    Madeleine M Lowery
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    IEEE Trans Biomed Eng 53:1926-33. 2006
    ..The estimated detection radius of the IMES electrode, assuming a cylindrical muscle cross section, was 4.8, 6.2, and 7.5 mm for electrode orientations of 0 degree, 22.5 degrees, and 45 degrees with respect to the muscle fiber direction...
  2. ncbi request reprint Coherence between motor unit discharges in response to shared neural inputs
    Madeleine M Lowery
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin, Ireland
    J Neurosci Methods 163:384-91. 2007
    ..The results suggest that caution should be taken when interpreting differences in coherence observed between motor units with significantly different firing properties or when comparing data with coherence in different frequency ranges...
  3. doi request reprint Effect of extracellular potassium accumulation on muscle fiber conduction velocity: a simulation study
    Emma Fortune
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    Ann Biomed Eng 37:2105-17. 2009
    ....
  4. doi request reprint Simulation of cortico-basal ganglia oscillations and their suppression by closed loop deep brain stimulation
    Peadar F Grant
    School of Electrical, Electronic and Communications Engineering, University College Dublin, Dublin, Ireland
    IEEE Trans Neural Syst Rehabil Eng 21:584-94. 2013
    ..The results provide support for the application of closed-loop high-frequency DBS based on electrophysiological biomarkers. ..
  5. doi request reprint Application of non-linear control theory to a model of deep brain stimulation
    Clare M Davidson
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2011:6785-8. 2011
    ....
  6. doi request reprint Towards a genioglossus surface EMG model of obstructive sleep apnea
    Eric C P Chua
    University College Dublin, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2009:2979-82. 2009
    ..We also discuss the simulation results in the context of the limited experimental data available for surface genioglossus EMG in obstructive sleep apnea...
  7. doi request reprint Effect of subthalamic nucleus interconnectivity at deep brain stimulation onset and offset: a simulation study
    Guiyeom Kang
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2011:7107-10. 2011
    ..Weaker interconnectivity and lower numbers of STN neurons directly receiving DBS input were found to result in longer decay and recovery times at the onset and offset of DBS, respectively...
  8. ncbi request reprint Effect of elbow joint angle on force-EMG relationships in human elbow flexor and extensor muscles
    Emer P Doheny
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Ireland
    J Electromyogr Kinesiol 18:760-70. 2008
    ..It is, therefore, recommended that when using surface EMG to estimate muscle excitation, force should be normalised with respect to its maximum value at each angle...
  9. doi request reprint Effect of subcutaneous fat thickness and surface electrode configuration during neuromuscular electrical stimulation
    Emer P Doheny
    School of Physiotherapy and Performance Science, University College Dublin, Dublin, Ireland
    Med Eng Phys 32:468-74. 2010
    ..These results suggest that by using larger electrodes above regions of high subcutaneous fat thickness, the efficacy of NMES could be maintained while reducing the current density at the skin and the associated subject discomfort...
  10. doi request reprint Analysis of the mechanism of action of deep brain stimulation using the concepts of dither injection and the equivalent nonlinearity
    Annraoi M de Paor
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    IEEE Trans Biomed Eng 56:2717-20. 2009
    ..We propose that this model provides a framework for understanding the mechanism by which an injected high-frequency signal can quench undesired oscillations in closed-loop systems of interacting neurons in the brain...
  11. doi request reprint The effect of elbow joint centre displacement on force generation and neural excitation
    Emer P Doheny
    University College Dublin, Ireland
    Med Biol Eng Comput 47:589-98. 2009
    ....
  12. doi request reprint Interaction of oscillations, and their suppression via deep brain stimulation, in a model of the cortico-basal ganglia network
    Guiyeom Kang
    School of Electrical, Electronic and Communications Engineering, University College Dublin, Ireland
    IEEE Trans Neural Syst Rehabil Eng 21:244-53. 2013
    ..The results provide new insights into the mechanisms by which synchronous oscillations can arise within the network and how DBS may suppress unwanted oscillatory activity...
  13. doi request reprint Electric field distribution in a finite-volume head model of deep brain stimulation
    Peadar F Grant
    University College Dublin, School of Electrical, Electronic and Mechanical Engineering, Dublin 4, Ireland
    Med Eng Phys 31:1095-103. 2009
    ....
  14. doi request reprint Contribution of dielectric dispersions to voltage waveforms arising from electrical stimulation
    Peadar F Grant
    UCD School of Electrical, Electronic and Communications Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2012:4148-51. 2012
    ..However, removal of low-frequency dispersions below 1 MHz resulted in greater reductions in the threshold stimulus amplitudes necessary for activation of axons, with errors of up to 86% observed...
  15. doi request reprint Fatigue related changes in electromyographic coherence between synergistic hand muscles
    Shashikala Kattla
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Exp Brain Res 202:89-99. 2010
    ....
  16. doi request reprint Benefits of a worksite or home-based bench stepping intervention for sedentary middle-aged adults - a pilot study
    Jacqueline L Mair
    Institute for Sport and Health, University College Dublin, Dublin, Ireland
    Clin Physiol Funct Imaging 34:10-7. 2014
    ....
  17. doi request reprint Effects of the electrical double layer and dispersive tissue properties in a volume conduction model of deep brain stimulation
    Peadar F Grant
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2009:6497-500. 2009
    ....
  18. doi request reprint A model of pathological oscillations in the basal ganglia and deep brain stimulation in Parkinson's disease
    Guiyeom Kang
    University College Dublin, Belfield, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2009:3909-12. 2009
    ..The efficacy of the DBS input in quenching the pathological oscillations is shown to vary systematically with the frequency, pulse width and amplitude of the applied stimulus...
  19. doi request reprint The effect of subcutaneous fat thickness on the efficacy of transcutaneous electrical stimulation
    Emer P Doheny
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    Conf Proc IEEE Eng Med Biol Soc 2008:5684-7. 2008
    ....
  20. doi request reprint Effect of dispersive conductivity and permittivity in volume conductor models of deep brain stimulation
    Peadar F Grant
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin 4, Ireland
    IEEE Trans Biomed Eng 57:2386-93. 2010
    ..33% and 11.10%, respectively, for current-controlled and voltage-controlled stimulations, with higher errors observed when higher or lower frequencies were used...
  21. pmc Whole body oxygen uptake and evoked knee torque in response to low frequency electrical stimulation of the quadriceps muscles: V•O2 frequency response to NMES
    Conor M Minogue
    School of Electrical, Electronic and Communications Engineering, University College, Dublin, Ireland
    J Neuroeng Rehabil 10:63. 2013
    ..The aim of this study was to examine the frequency response of the oxygen uptake and evoked torque due to NMES of the quadriceps muscles across a range of low frequencies spanning the twitch to tetanus transition...
  22. doi request reprint Effects of a low-volume, vigorous intensity step exercise program on functional mobility in middle-aged adults
    Emer P Doheny
    Technology Research for Independent Living TRIL Centre, Dublin, Ireland
    Ann Biomed Eng 41:1748-57. 2013
    ..The novel method of functional mobility assessment presented provides a reliable means to quantify subtle changes in mobility during postural transitions. Over time, this exercise program may improve functional mobility. ..
  23. doi request reprint Simulation of the interaction between muscle fiber conduction velocity and instantaneous firing rate
    Emma Fortune
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Ann Biomed Eng 39:96-109. 2011
    ..They additionally suggest that the positive correlations between instantaneous firing rate, conduction velocity, and amplitude are directly related to the VRF and ARF...
  24. ncbi request reprint A technique to track individual motor unit action potentials in surface EMG by monitoring their conduction velocities and amplitudes
    Rebecca B J Beck
    Department of Electronic and Electrical Engineering, University College Dublin, Dublin 4, Ireland
    IEEE Trans Biomed Eng 52:622-9. 2005
    ..It is concluded that this analysis technique enhances the suitability of SEMG for clinical applications and points toward a future of noninvasive diagnosis and assessment of neuromuscular disorders...
  25. ncbi request reprint Improved surface EMG electrode for measuring genioglossus muscle activity
    Ciara M O'Connor
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Respir Physiol Neurobiol 159:55-67. 2007
    ....
  26. ncbi request reprint A neuromusculoskeletal model of the elbow joint for pre-clinical testing of total elbow replacement
    Emer P Doheny
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin
    Conf Proc IEEE Eng Med Biol Soc 2007:2400-3. 2007
    ..In addition, slight changes (up to 4.45 degrees ) in the direction of the joint reaction force vector were also observed...
  27. doi request reprint Effect of membrane properties on skeletal muscle fiber excitability: a sensitivity analysis
    Emma Fortune
    School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Belfield, Dublin 4, Ireland
    Med Biol Eng Comput 50:617-29. 2012
    ..Furthermore, they demonstrate the potential of computational modeling as a tool for investigating the underlying mechanisms of complex phenomena such as those which govern skeletal muscle excitation...
  28. ncbi request reprint Frequency- and time-domain FEM models of EMG: capacitive effects and aspects of dispersion
    Nikolay S Stoykov
    Rehabilitation Institute of Chicago, IL 60611, USA
    IEEE Trans Biomed Eng 49:763-72. 2002
    ..It is clear that there is a need to establish accurate values of both conductivity and permittivity for human muscle tissue in vivo in order to quantify the influence of capacitance and dispersion on the EMG signal...
  29. ncbi request reprint A simulation study to examine the use of cross-correlation as an estimate of surface EMG cross talk
    Madeleine M Lowery
    Rehabilitation Institute of Chicago, and Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago 60611, USA
    J Appl Physiol (1985) 94:1324-34. 2003
    ..Furthermore, it is possible that a high correlation between surface EMG signals may reflect an association between motor unit firing times, for example due to motor unit synchronization...
  30. ncbi request reprint Independence of myoelectric control signals examined using a surface EMG model
    Madeleine M Lowery
    Research Department, Rehabilitation Institute of Chicago, Chicago, IL 60611 4496, USA
    IEEE Trans Biomed Eng 50:789-93. 2003
    ..More focal control signals can be obtained, at the expense of increased variability, by using the mean square value, rather than the root mean square or average rectified value...
  31. ncbi request reprint Analysis and simulation of changes in EMG amplitude during high-level fatiguing contractions
    Madeleine M Lowery
    Rehabilitation Institute of Chicago, 345 E Superior St, Chicago, Illinois 60611, USA
    IEEE Trans Biomed Eng 50:1052-62. 2003
    ....
  32. ncbi request reprint Finite-element time-domain algorithms for modeling linear Debye and Lorentz dielectric dispersions at low frequencies
    Nikolay S Stoykov
    Rehabilitation Institute of Chicago, IL 60611, USA
    IEEE Trans Biomed Eng 50:1100-7. 2003
    ..Potential applications include FETD modeling of electromyography, functional electrical stimulation, defibrillation, and effects of lightning and impulsive electric shock...
  33. ncbi request reprint Volume conduction in an anatomically based surface EMG model
    Madeleine M Lowery
    Sensory Motor Performance Program Laboratory, Research Department, Rehabilitation Institute of Chicago, Chicago, IL 60611 4496, USA
    IEEE Trans Biomed Eng 51:2138-47. 2004
    ..However, if the objective is to examine more qualitative features of the surface EMG signal, then an idealized volume conductor model with appropriate tissue thicknesses provides a close approximation...
  34. ncbi request reprint A finite-element analysis of the effect of muscle insulation and shielding on the surface EMG signal
    Nikolay S Stoykov
    Rehabilitation Institute of Chicago, 345 East Superior Street, Room 1436, IL 60611, USA
    IEEE Trans Biomed Eng 52:117-21. 2005
    ..The results suggest that the crosstalk between insulated or shielded muscles is small but that it increases with increasing subcutaneous fat. The findings may be useful in the control of multifunctional prostheses...
  35. ncbi request reprint A simulation study to examine the effect of common motoneuron inputs on correlated patterns of motor unit discharge
    Madeleine M Lowery
    Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Illinois, USA
    J Comput Neurosci 19:107-24. 2005
    ....
  36. ncbi request reprint A multiple-layer finite-element model of the surface EMG signal
    Madeleine M Lowery
    Rehabilitation Institute of Chicago, Department of Physical Medicine and Rehabilitation, Northwestem University, IL 60611, USA
    IEEE Trans Biomed Eng 49:446-54. 2002
    ....
  37. ncbi request reprint Decoding a new neural machine interface for control of artificial limbs
    Ping Zhou
    Neural Engineering Center for Artificial Limbs, Rehabilitation Institute of Chicago, IL, USA
    J Neurophysiol 98:2974-82. 2007
    ..In addition, the results demonstrate that the central motor control system is capable of eliciting complex efferent commands for a missing limb, in the absence of peripheral feedback and without retraining of the pathways involved...