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Budidha, K. ORCID: 0000-0002-6329-8399, Thaha, M. A., Eschbach, M. , Mejía-Mejía, E. ORCID: 0000-0002-5357-4329 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2022). Proof-of-principle validation of a novel intraluminal optical sensor for dynamic monitoring of intestinal anastomosis: An in vivo animal model case study. In: Proceedings of IEEE Sensors. IEEE Sensors 2022, 30 Oct - 2 Nov 2022, Dallas, TX, USA. doi: 10.1109/SENSORS52175.2022.9967061

May, J. M. ORCID: 0000-0002-8659-756X, Nomoni, M., Budidha, K. , Choi, C. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2022). Mechanical Testing of Artificial Vessels and Tissues for Photoplethysmography Phantoms. In: 2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society, 11-15 Jul 2022, Glasgow, United Kingdom. doi: 10.1109/embc48229.2022.9871830

Mejía-Mejía, E. ORCID: 0000-0002-5357-4329, Budidha, K., Kyriacou, P. A. ORCID: 0000-0002-2868-485X & Mamouei, M. H.view all authors (2022). Comparison of pulse rate variability and morphological features of photoplethysmograms in estimation of blood pressure. Biomedical Signal Processing and Control, 78, article number 103968. doi: 10.1016/j.bspc.2022.103968

Charlton, P. H., Kotzen, K., Mejía-Mejía, E. ORCID: 0000-0002-5357-4329 , Aston, P. J., Budidha, K., Mant, J., Pettit, C., Behar, J. A. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2022). Detecting beats in the photoplethysmogram: benchmarking open-source algorithms. Physiological Measurement, 43(8), article number 085007. doi: 10.1088/1361-6579/ac826d

May, J. M. ORCID: 0000-0002-8659-756X, Mejía-Mejía, E. ORCID: 0000-0002-5357-4329, Nomoni, M. , Budidha, K. ORCID: 0000-0002-6329-8399, Choi, C. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Effects of Contact Pressure in Reflectance Photoplethysmography in an In Vitro Tissue-Vessel Phantom. Sensors, 21(24), article number 8421. doi: 10.3390/s21248421

Baishya, N., Mamouei, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). In-vivo quantification of lactate using Near Infrared reflectance spectroscopy. In: 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 1-5 Nov 2021, Mexico. doi: 10.1109/EMBC46164.2021.9630235

Budidha, K. ORCID: 0000-0002-6329-8399, Chatterjee, S., Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Monte Carlo Characterization of Short-Wave Infrared Optical Wavelengths for Biosensing Applications. In: 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 1-5 Nov 2021, Mexico. doi: 10.1109/EMBC46164.2021.9630061

Baishya, N., Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). Comparison of Dual Beam Dispersive and FTNIR Spectroscopy for Lactate Detection. Sensors, 21(5), article number 1891. doi: 10.3390/s21051891

Chatterjee, S., Budidha, K. ORCID: 0000-0002-6329-8399, Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). In-silico investigation towards the non-invasive optical detection of blood lactate. Scientific Reports, 11(1), article number 14274. doi: 10.1038/s41598-021-92803-x

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2021). An empirical investigation of deviations from the Beer-Lambert law in optical estimation of lactate. Scientific Reports, 11(1), article number 13734. doi: 10.1038/s41598-021-92850-4

Baishya, N. ORCID: 0000-0002-2231-6132, Mamouei, M. H., Budidha, K. , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). In-vitro spectrometric analysis of hyperlactatemia and lactic acidosis in buffer relating to sepsis. Journal of Near Infrared Spectroscopy, 29(1), pp. 53-59. doi: 10.1177/0967033520968951

Baishya, N., Momouei, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Near infrared spectrometric investigation of lactate in a varying pH buffer. Journal of Near Infrared Spectroscopy, 28(5-6), pp. 328-333. doi: 10.1177/0967033520905374

Baishya, N. ORCID: 0000-0002-2231-6132, Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Near Infrared and Aquaphotomic analysis of water absorption in lactate containing media. In: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 20-24 Jul 2020, Online. doi: 10.1109/EMBC44109.2020.9176675

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. ORCID: 0000-0003-0730-3189 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). The efficacy of support vector machines in modelling deviations from the Beer-Lambert law for optical measurement of lactate. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 20-24 Jul 2020, Online. doi: 10.1109/EMBC44109.2020.9175215

Baishya, N., Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Investigations into the Effects of pH on Quantitative Measurements of Lactate in Biological Media Using ATR-FTIR Spectroscopy. Molecules, 25(16), article number 3695. doi: 10.3390/molecules25163695

Mejía-Mejía, E. ORCID: 0000-0002-5357-4329, Budidha, K. ORCID: 0000-0002-6329-8399, Abay, T. Y. , May, J.M. ORCID: 0000-0002-8659-756X & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Heart Rate Variability and Multi-Site Pulse Rate Variability for the Assessment of Autonomic Responses to Whole-Body Cold Exposure. In: 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). doi: 10.1109/EMBC44109.2020.9175856

Mejía-Mejía, E. ORCID: 0000-0002-5357-4329, Budidha, K. ORCID: 0000-0002-6329-8399, Abay, T. Y. , May, J.M. ORCID: 0000-0002-8659-756X & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Heart Rate Variability (HRV) and Pulse Rate Variability (PRV) for the Assessment of Autonomic Responses. Frontiers and Physiology, 11, pp. 1-17. doi: 10.3389/fphys.2020.00779

Chatterjee, S. ORCID: 0000-0002-7735-6123, Budidha, K. ORCID: 0000-0002-6329-8399 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2020). Investigating the origin of photoplethysmographyusing a multiwavelength Monte Carlo model. Physiological Measurement, 41(8), article number 084001. doi: 10.1088/1361-6579/aba008

Mamouei, M. H., Budidha, K. ORCID: 0000-0002-6329-8399, Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Comparison of wavelength selection methods for in-vitro estimation of lactate: a new unconstrained, genetic algorithm-based wavelength selection. Scientific Reports, 10(1), article number 16905. doi: 10.1038/s41598-020-73406-4

Budidha, K. ORCID: 0000-0002-6329-8399, Mamouei, M. H., Baishya, N. ORCID: 0000-0002-2231-6132 , Qassem, M. ORCID: 0000-0003-0730-3189, Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2020). Identification and Quantitative Determination of Lactate Using Optical Spectroscopy—Towards a Noninvasive Tool for Early Recognition of Sepsis. Sensors, 20(18), article number 5402. doi: 10.3390/s20185402

Mamouei, M. H., Qassem, M., Budidha, K. ORCID: 0000-0002-6329-8399 , Baishya, N., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). Comparison of a Genetic Algorithm Variable Selection and Interval Partial Least Squares for quantitative analysis of lactate in PBS. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 3239-3242. doi: 10.1109/embc.2019.8856765

Budidha, K. ORCID: 0000-0002-6329-8399, Mamouei, M. H., Baishya, N. , Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). In vitro quantification of lactate in Phosphate Buffer Saline (PBS) samples. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 1205-1208. doi: 10.1109/embc.2019.8857756

Baishya, N., Budidha, K. ORCID: 0000-0002-6329-8399, Mamouei, M. H. , Qassem, M., Vadgama, P. & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2019). Near Infrared Spectrometric Investigations on the behaviour of Lactate. 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 5769-5772. doi: 10.1109/embc.2019.8857833

Kyriacou, P. ORCID: 0000-0002-2868-485X, Budidha, K. ORCID: 0000-0002-6329-8399 & Abay, T. Y. (2019). Optical Techniques for Blood and Tissue Oxygenation. In: Narayan, R. (Ed.), Encyclopedia of Biomedical Engineering. (pp. 461-472). Elsevier. doi: 10.1016/b978-0-12-801238-3.10886-4

Budidha, K. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2019). Photoplethysmography for Quantitative Assessment of Sympathetic Nerve Activity (SNA) During Cold Stress. Frontiers in Physiology, 9(JAN), article number 1863. doi: 10.3389/fphys.2018.01863

Budidha, K. ORCID: 0000-0002-6329-8399, Rybynok, V & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2018). Design and Development of a Modular, Multichannel Photoplethysmography System. IEEE Transactions on Instrumentation and Measurement, 67(8), pp. 1954-1965. doi: 10.1109/tim.2018.2810643

Budidha, K. & Kyriacou, P. A. (2017). In vivo investigation of ear canal pulse oximetry during hypothermia. Journal of Clinical Monitoring and Computing, 32(1), pp. 97-107. doi: 10.1007/s10877-017-9975-4

Budidha, K. (2016). In vivo investigations of photoplethysmograms and arterial oxygen saturation from the auditory canal in conditions of compromised peripheral perfusion. (Unpublished Doctoral thesis, City, University of London)

Budidha, K. & Kyriacou, P. A. (2015). Investigation of photoplethysmography and arterial blood oxygen saturation from the ear-canal and the finger under conditions of artificially induced hypothermia. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, 2015-N, pp. 7954-7957. doi: 10.1109/EMBC.2015.7320237

Budidha, K., Abay, T. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2015). Investigation of photoplethysmography, laser doppler flowmetry and near infrared spectroscopy during induced thermal stress. In: 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 25-29 Aug 2015, Milan, Italy. doi: 10.1109/EMBC.2015.7319861

Ysehak Abay, T., Budidha, K. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2015). Assessment of Blood Flow, Blood Volume and Haemoglobin concentrations by Photoplethysmography during induced hypothermia

Budidha, K. ORCID: 0000-0002-6329-8399, Ysehak Abay, T. ORCID: 0000-0002-9096-7551 & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2015). Comparison of cerebral blood flow auto regulation with peripheral blood flow autoregulation using photoplethysmography

Shafqat, K., Ysehak Abay, T. ORCID: 0000-0002-9096-7551, Budidha, K. ORCID: 0000-0002-6329-8399 & Kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2015). Empirical Mode Decomposition of NIRS signals for assessment of cerebral and muscle thermoregulation

Budidha, K. ORCID: 0000-0002-6329-8399, Njoum, H. & Kyriacou, P. A. ORCID: 0000-0002-2868-485X (2014). Investigation of pulse transit times using multi-site reflectance photoplethysmography under conditions of artificially induced peripheral vasoconstriction. Paper presented at the 7th World Congress of Biomechanics (WCB 2014), 7 Jul 2014, Boston, USA.

Budidha, K. & Kyriacou, P. A. (2014). The human ear canal: investigation of its suitability for monitoring photoplethysmographs and arterial oxygen saturation. Physiological Measurement, 35(2), pp. 111-128. doi: 10.1088/0967-3334/35/2/111

Budidha, K. & Kyriacou, P. A. (2014). Investigation of Pulse Transit Times utilizing multisite reflectance photoplethysmography under conditions of artificially induced peripheral vasoconstriction. 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp. 1965-1968. doi: 10.1109/EMBC.2014.6943998

Rybynok, V., May, J.M., Budidha, K. & Kyriacou, P. A.view all authors (2013). Design and Development of a novel Multi-channel Photoplethysmographic Research System. In: 2013 IEEE Point-of-Care Healthcare Technologies (PHT). (pp. 267-270). IEEE. doi: 10.1109/PHT.2013.6461336

Rybynok, V., May, J.M., Budidha, K. & Kyriacou, P. A.view all authors (2013). Design and development of a novel multi-channel photoplethysmographic research system. Paper presented at the 35th Annual International Conference of the IEEE Engineering-in-Medicine-and-Biology-Society (EMBS), 2013, 03-07-2013 - 07-07-2013, Osaka, Japan.

Budidha, K. & Kyriacou, P. A. (2013). Development of an optical probe to investigate the suitability of measuring photoplethysmographs and blood oxygen saturation from the human auditory canal. 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013, pp. 1736-1739. doi: 10.1109/EMBC.2013.6609855

Budidha, K. & Kyriacou, P. A. (2013). Development of an optical probe to investigate the suitability of measuring photoplethysmographs and blood oxygen saturation from the human auditory canal. Paper presented at the 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’13), 03-07-2013 - 07-07-2013, Osaka, Japan. doi: 10.1109/EMBC.2013.6609855

Rybynok, V., Budidha, K. ORCID: 0000-0002-6329-8399, May, J. ORCID: 0000-0002-8659-756X , Njoum, H., phillips, J. & kyriacou, P. A. ORCID: 0000-0002-2868-485Xview all authors (2012). ZenPPG: a modular multi-channel photoplethysmography system