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Items: 1 to 50 of 53

1.

Detection of myasthenia gravis using electrooculography signals.

Liang T, Boulos MI, Murray BJ, Krishnan S, Katzberg H, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2016 Aug;2016:896-899. doi: 10.1109/EMBC.2016.7590845.

PMID:
28268468
2.

The effect of left ventricular pacing on transmural activation delay in myopathic human hearts.

Porta-Sánchez A, Angaran P, Massé S, Nair K, Farid T, Umapathy K, Asta J, Gizurarson S, Nanthakumar K.

Europace. 2018 Apr 1;20(4):719-728. doi: 10.1093/europace/euw375.

3.

Effect of spatial resolution and filtering on mapping cardiac fibrillation.

King B, Porta-Sánchez A, Massé S, Zamiri N, Balasundaram K, Kusha M, Jackson N, Haldar S, Umapathy K, Nanthakumar K.

Heart Rhythm. 2017 Apr;14(4):608-615. doi: 10.1016/j.hrthm.2017.01.023. Epub 2017 Jan 17.

PMID:
28104480
4.

Electrophysiological Cardiac Modeling: A Review.

Beheshti M, Umapathy K, Krishnan S.

Crit Rev Biomed Eng. 2016;44(1-2):99-122. doi: 10.1615/CritRevBiomedEng.2016016454. Review.

PMID:
27652454
5.

Modeling Current Density Maps Using Aliev-Panfilov Electrophysiological Heart Model.

Beheshti M, Foomany FH, Magtibay K, Masse S, Lai P, Asta J, Jaffray DA, Nanthakumar K, Krishnan S, Umapathy K.

Cardiovasc Eng Technol. 2016 Sep;7(3):238-53. doi: 10.1007/s13239-016-0271-0. Epub 2016 Jun 29.

PMID:
27357301
6.

Feature-based MRI data fusion for cardiac arrhythmia studies.

Magtibay K, Beheshti M, Foomany FH, Massé S, Lai PF, Zamiri N, Asta J, Nanthakumar K, Jaffray D, Krishnan S, Umapathy K.

Comput Biol Med. 2016 May 1;72:13-21. doi: 10.1016/j.compbiomed.2016.02.006. Epub 2016 Feb 19.

PMID:
26970857
7.

Discriminative sparse coding of ECG during ventricular arrhythmias using LC-K-SVD approach.

Kalaji I, Balasundaram K, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2015;2015:5211-4. doi: 10.1109/EMBC.2015.7319566.

PMID:
26737466
8.

Noise distribution and denoising of current density images.

Beheshti M, Foomany FH, Magtibay K, Jaffray DA, Krishnan S, Nanthakumar K, Umapathy K.

J Med Imaging (Bellingham). 2015 Apr;2(2):024005. doi: 10.1117/1.JMI.2.2.024005. Epub 2015 May 14.

9.

Tracking rotors with minimal electrodes: modulation index-based strategy.

Balasundaram K, Umapathy K, Jeyaratnam J, Niri A, Massé S, Farid T, Nair K, Asta J, Cusimano RJ, Vigmond E, Nanthakumar K.

Circ Arrhythm Electrophysiol. 2015 Apr;8(2):447-55. doi: 10.1161/CIRCEP.114.002306. Epub 2015 Mar 4.

PMID:
25740825
10.

Wavelet-based characterization of gait signal for neurological abnormalities.

Baratin E, Sugavaneswaran L, Umapathy K, Ioana C, Krishnan S.

Gait Posture. 2015 Feb;41(2):634-9. doi: 10.1016/j.gaitpost.2015.01.012. Epub 2015 Jan 20.

PMID:
25661004
11.

Fusion of structural and functional cardiac magnetic resonance imaging data for studying ventricular fibrillation.

Magtibay K, Beheshti M, Foomany FH, Balasundaram K, Masse S, Lai P, Asta J, Zamiri N, Jaffray DA, Nanthakumar K, Krishnan S, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2014;2014:5579-82. doi: 10.1109/EMBC.2014.6944891.

PMID:
25571259
12.

A novel approach to quantification of real and artifactual components of current density imaging for phantom and live heart.

Foomany FH, Beheshti M, Magtibay K, Masse S, Lai P, Asta J, Zamiri N, Jaffray DA, Krishnan S, Nanthakumar K, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2014;2014:1075-8. doi: 10.1109/EMBC.2014.6943780.

PMID:
25570148
13.

The effects of long chain polyunsaturated fatty acids on local activation properties in dogs vulnerable to atrial fibrillation.

Abdulmajeed R, Ramadeen A, Masse S, Foomany FH, Balasundaram K, Hu X, Nanthakumar K, Dorian P, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2014;2014:1067-70. doi: 10.1109/EMBC.2014.6943778.

PMID:
25570146
14.

Blind source separation in characterizing ECG pre-shock waveforms during Ventricular Fibrillation.

Rasooli M, Foomany FH, Balasundaram K, Masse S, Zamiri N, Ramadeen A, Hu X, Dorian P, Nanthakumar K, Beheshti S, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2013;2013:5833-6. doi: 10.1109/EMBC.2013.6610878.

PMID:
24111065
15.

Analysis of reliability metrics and quality enhancement measures in current density imaging.

Foomany FH, Beheshti M, Magtibay K, Masse S, Foltz W, Sevaptsidis E, Lai P, Jaffray DA, Krishnan S, Nanthakumar K, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2013;2013:4394-7. doi: 10.1109/EMBC.2013.6610520.

PMID:
24110707
16.

Automated signal pattern detection in ECG during human ventricular arrhythmias.

Balasundaram K, Masse S, Nair K, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2013;2013:1029-32. doi: 10.1109/EMBC.2013.6609679.

PMID:
24109866
17.

A flexible approach for simulating physiological signals.

Marsousi M, Alirezaie J, Umapathy K.

Physiol Meas. 2013 Jun;34(6):695-712. doi: 10.1088/0967-3334/34/6/695. Epub 2013 May 29.

PMID:
23719193
18.

Efficacy of the 6-month thrice-weekly regimen in the treatment of new sputum smear-positive pulmonary tuberculosis under clinical trial conditions.

Banu Rekha VV, Rajaram K, Kripasankar AS, Parthasarathy R, Umapathy KC, Sheikh I, Selvakumar N, Victor M, Niruparani C, Sridhar R, Jawahar MS.

Natl Med J India. 2012 Jul-Aug;25(4):196-200.

PMID:
23278775
19.

A classification scheme for ventricular arrhythmias using wavelets analysis.

Balasundaram K, Masse S, Nair K, Umapathy K.

Med Biol Eng Comput. 2013 Feb;51(1-2):153-64. doi: 10.1007/s11517-012-0980-y. Epub 2012 Nov 7.

PMID:
23132525
20.

Ambiguity domain-based identification of altered gait pattern in ALS disorder.

Sugavaneswaran L, Umapathy K, Krishnan S.

J Neural Eng. 2012 Aug;9(4):046004. doi: 10.1088/1741-2560/9/4/046004. Epub 2012 Jun 25.

PMID:
22732899
21.

Pathological speech signal analysis using time-frequency approaches.

Ghoraani B, Umapathy K, Sugavaneswaran L, Krishnan S.

Crit Rev Biomed Eng. 2012;40(1):63-95.

PMID:
22428799
22.

Studying semblances of a true killer: experimental model of human ventricular fibrillation.

Nair K, Farid T, Masse S, Umapathy K, Watkins S, Poku K, Asta J, Kusha M, Sevaptsidis E, Jacob J, Floras JS, Nanthakumar K.

Am J Physiol Heart Circ Physiol. 2012 Apr 1;302(7):H1533-7. doi: 10.1152/ajpheart.00471.2011. Epub 2012 Jan 20.

23.

Discriminative time-frequency kernels for gait analysis for amyotrophic lateral sclerosis.

Sugavaneswaran L, Umapathy K, Krishnan S.

Conf Proc IEEE Eng Med Biol Soc. 2011;2011:2683-6. doi: 10.1109/IEMBS.2011.6090737.

PMID:
22254894
24.

Wavelet-based features for characterizing ventricular arrhythmias in optimizing treatment options.

Balasundaram K, Masse S, Nair K, Farid T, Nanthakumar K, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2011;2011:969-72. doi: 10.1109/IEMBS.2011.6090219.

PMID:
22254473
25.

Predicting refibrillation from pre-shock waveforms in optimizing cardiac resuscitation.

Afatmirni E, Nanthakumar K, Masse S, Nair K, Farid T, Krishnan S, Dorian P, Umapathy K.

Conf Proc IEEE Eng Med Biol Soc. 2011;2011:251-4. doi: 10.1109/IEMBS.2011.6090048.

PMID:
22254297
26.

Relating spatial heterogeneities to rotor formation in studying human ventricular fibrillation.

Jeyaratnam J, Umapathy K, Masse S, Nair K, Farid T, Krishnan S, Nanthakumar K.

Conf Proc IEEE Eng Med Biol Soc. 2011;2011:231-4. doi: 10.1109/IEMBS.2011.6090043.

PMID:
22254292
27.

Role of KATP channels in the maintenance of ventricular fibrillation in cardiomyopathic human hearts.

Farid TA, Nair K, Massé S, Azam MA, Maguy A, Lai PF, Umapathy K, Dorian P, Chauhan V, Varró A, Al-Hesayen A, Waxman M, Nattel S, Nanthakumar K.

Circ Res. 2011 Nov 11;109(11):1309-18. doi: 10.1161/CIRCRESAHA.110.232918. Epub 2011 Oct 6.

PMID:
21980123
28.

Intramural activation during early human ventricular fibrillation.

Nair K, Umapathy K, Farid T, Masse S, Mueller E, Sivanandan RV, Poku K, Rao V, Nair V, Butany J, Ideker RE, Nanthakumar K.

Circ Arrhythm Electrophysiol. 2011 Oct;4(5):692-703. doi: 10.1161/CIRCEP.110.961037. Epub 2011 Jul 12.

PMID:
21750274
29.

Real-time electrogram analysis for monitoring coronary blood flow during human ventricular fibrillation: implications for CPR.

Umapathy K, Foomany FH, Dorian P, Farid T, Sivagangabalan G, Nair K, Masse S, Krishnan S, Nanthakumar K.

Heart Rhythm. 2011 May;8(5):740-9. doi: 10.1016/j.hrthm.2010.12.033. Epub 2010 Dec 24.

PMID:
21185950
30.

Wavelet-based markers of ventricular fibrillation in optimizing human cardiac resuscitation.

Foomany FH, Umapathy K, Sugavaneswaran L, Krishnan S, Masse S, Farid T, Nair K, Dorian P, Nanthakumar K.

Conf Proc IEEE Eng Med Biol Soc. 2010;2010:2001-4. doi: 10.1109/IEMBS.2010.5627841.

PMID:
21097215
31.

Exploiting the ambiguity domain for non-stationary biomedical signal classification.

Sugavaneswaran L, Umapathy K, Krishnan S.

Conf Proc IEEE Eng Med Biol Soc. 2010;2010:1934-7. doi: 10.1109/IEMBS.2010.5627723.

PMID:
21097001
32.

Automated detection of nocturnal slow eye movements modulated by selective serotonin reuptake inhibitors.

Boulos MI, Umapathy K, Shokrollahi P, McConville KM, Sudenis T, Jewell DR, Krishnan S, Murray BJ.

Prog Neuropsychopharmacol Biol Psychiatry. 2011 Jan 15;35(1):126-30. doi: 10.1016/j.pnpbp.2010.10.001. Epub 2010 Oct 8.

PMID:
20933562
33.

Phase mapping of cardiac fibrillation.

Umapathy K, Nair K, Masse S, Krishnan S, Rogers J, Nash MP, Nanthakumar K.

Circ Arrhythm Electrophysiol. 2010 Feb;3(1):105-14. doi: 10.1161/CIRCEP.110.853804. Review. No abstract available.

PMID:
20160178
34.

Computer-assisted method for quantifying sleep eye movements that reflects medication effects.

Shokrollahi P, Krishnan S, Umapathy K, McConville K, Boulos MI, Jewell D, Murray BJ.

Conf Proc IEEE Eng Med Biol Soc. 2009;2009:1347-50. doi: 10.1109/IEMBS.2009.5334147.

PMID:
19964515
35.

Efficacy of noncontact mapping in detecting epicardial activation.

Shokrollahi E, Krishnan S, Masse S, Umapathy K, Soucie L, Farid TA, Nanthakumar K.

Conf Proc IEEE Eng Med Biol Soc. 2009;2009:1901-4. doi: 10.1109/IEMBS.2009.5333029.

PMID:
19963772
36.

Optimizing cardiac resuscitation outcomes using wavelet analysis.

Umapathy K, Krishnan S, Masse S, Hu X, Dorian P, Nanthakumar K.

Conf Proc IEEE Eng Med Biol Soc. 2009;2009:6761-4. doi: 10.1109/IEMBS.2009.5332509.

PMID:
19963687
37.

Effect of global ischemia and reperfusion during ventricular fibrillation in myopathic human hearts.

Massé S, Farid T, Dorian P, Umapathy K, Nair K, Asta J, Ross H, Rao V, Sevaptsidis E, Nanthakumar K.

Am J Physiol Heart Circ Physiol. 2009 Dec;297(6):H1984-91. doi: 10.1152/ajpheart.00101.2009. Epub 2009 Oct 9.

38.

Regional frequency variation during human ventricular fibrillation.

Umapathy K, Masse S, Sevaptsidis E, Asta J, Ross H, Thavandiran N, Nair K, Farid T, Cusimano R, Rogers J, Krishnan S, Nanthakumar K.

Med Eng Phys. 2009 Oct;31(8):964-70. doi: 10.1016/j.medengphy.2009.05.009. Epub 2009 Jun 27.

PMID:
19560958
39.

Spatiotemporal frequency analysis of ventricular fibrillation in explanted human hearts.

Umapathy K, Massé S, Sevaptsidis E, Asta J, Krishnan SS, Nanthakumar K.

IEEE Trans Biomed Eng. 2009 Feb;56(2):328-35. doi: 10.1109/TBME.2008.2006031. Epub 2008 Oct 7.

PMID:
19272907
40.

Aborted sudden death from sustained ventricular fibrillation.

Nair K, Umapathy K, Downar E, Nanthakumar K.

Heart Rhythm. 2008 Aug;5(8):1198-200. doi: 10.1016/j.hrthm.2008.04.005. Epub 2008 Apr 11.

PMID:
18621588
41.

Electrogram fractionation in murine HL-1 atrial monolayer model.

Umapathy K, Masse S, Kolodziejska K, Veenhuyzen GD, Chauhan VS, Husain M, Farid T, Downar E, Sevaptsidis E, Nanthakumar K.

Heart Rhythm. 2008 Jul;5(7):1029-35. doi: 10.1016/j.hrthm.2008.03.022. Epub 2008 Mar 21.

PMID:
18598960
42.

Cardiac stimulation with high voltage discharge from stun guns.

Nanthakumar K, Massé S, Umapathy K, Dorian P, Sevaptsidis E, Waxman M.

CMAJ. 2008 May 20;178(11):1451-7. doi: 10.1503/cmaj.071867. Epub 2008 May 1. Review.

43.

Cutaneous tuberculosis.

Umapathy KC, Begum R, Ravichandran G, Rehman F, Paramasivan CN, Ramanathan VD.

Trop Med Int Health. 2007 Jul;12(7):902. No abstract available.

44.

Comprehensive findings on clinical, bacteriological, histopathological and therapeutic aspects of cutaneous tuberculosis.

Umapathy KC, Begum R, Ravichandran G, Rahman F, Paramasivan CN, Ramanathan VD.

Trop Med Int Health. 2006 Oct;11(10):1521-8.

45.
46.

Feature analysis of pathological speech signals using local discriminant bases technique.

Umapathy K, Krishnan S.

Med Biol Eng Comput. 2005 Jul;43(4):457-64.

PMID:
16255427
47.

Discrimination of pathological voices using a time-frequency approach.

Umapathy K, Krishnan S, Parsa V, Jamieson DG.

IEEE Trans Biomed Eng. 2005 Mar;52(3):421-30.

PMID:
15759572
48.

Biochemical and histochemical changes pertaining to active and healed cutaneous tuberculosis.

Jayasankar K, Shakila H, Umapathy KC, Ramanathan VD.

Br J Dermatol. 2002 Jun;146(6):977-82.

PMID:
12072065
49.

A multicentre study of the early bactericidal activity of anti-tuberculosis drugs.

Sirgel FA, Donald PR, Odhiambo J, Githui W, Umapathy KC, Paramasivan CN, Tam CM, Kam KM, Lam CW, Sole KM, Mitchison DA.

J Antimicrob Chemother. 2000 Jun;45(6):859-70.

PMID:
10837441
50.

Early bactericidal action of pulsed exposure to rifampicin, ethambutol, isoniazid & pyrazinamide in pulmonary tuberculosis patients.

Paramasivan CN, Herbert D, Umapathy KC, Rahman F, Krishnamurthy PV, Prabhakar R.

Indian J Med Res. 1994 Jul;100:1-4.

PMID:
7927544

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