Scholars@Duke

• Background
• 

  Education, Training, & Certifications

  • Postdoctoral Scholar, Stroke Center, Department Of Neurology, Medical University of South Carolina 2014 - 2016
  • Postdoctoral Scholar, Neurosciences Department, Medical University of South Carolina 2011 - 2014
  • Ph.D., State University of New York, Downstate Medical Center 2011
  • M.B.B.S., Gujarat University, B.J. Medical College (India) 2005
• 

  Previous Appointments & Affiliations

  • Assistant Professor in Neurology, Neurology, Stroke and Vascular Neurology, Neurology 2021 - 2023
  • Assistant Professor in Neurology, Neurology, Stroke and Vascular Neurology, Neurology 2019 - 2020
• Research
• 

  Selected Grants

  • TRANScranial direct current stimulation for POst-stroke motor Recover - a phase II sTudy (TRANSPORT 2) awarded by National Institutes of Health 2019 - 2023
  • Optimizing Parameters of Low-Intensity Focused Ultrasound for Cortical Modulation in Stroke Patients awarded by  American Heart Association 2021 - 2022
  • Realistic Measurements of tDCS-Modulated Activity and Electric Fields in the Human Brain In Vivo awarded by National Institutes of Health 2019 - 2022
• 

  External Relationships

  • Nyxoah
  • chetasetu
• Publications & Artistic Works
• 

  Selected Publications

  • Academic Articles

    • Chen, Mengyue, Chang Peng, Huaiyu Wu, Chih-Chung Huang, Taewon Kim, Zachary Traylor, Marie Muller, et al. “Numerical and experimental evaluation of low-intensity transcranial focused ultrasound wave propagation using human skulls for brain neuromodulation.” Med Phys 50, no. 1 (January 2023): 38–49. https://doi.org/10.1002/mp.16090.
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    • Feng, Wuwei, Alexis Domeracki, Christine Park, Shreyansh Shah, Pratik Y. Chhatbar, Swaroop Pawar, Cherylee Chang, et al. “Revisiting Transcranial Light Stimulation as a Stroke Therapeutic-Hurdles and Opportunities.” Transl Stroke Res, November 12, 2022. https://doi.org/10.1007/s12975-022-01103-7.
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    • Chhatbar, P. Y., S. Liu, V. Ramakrishnan, M. S. George, S. A. Kautz, and W. Feng. “Microdermabrasion facilitates direct current stimulation by lowering skin resistance.” Skin Health Dis 2, no. 3 (September 2022): e76. https://doi.org/10.1002/ski2.76.
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    • Francis, Joseph Thachil, Anna Rozenboym, Lee von Kraus, Shaohua Xu, Pratik Chhatbar, Mulugeta Semework, Emerson Hawley, and John Chapin. “Similarities Between Somatosensory Cortical Responses Induced via Natural Touch and Microstimulation in the Ventral Posterior Lateral Thalamus in Macaques.” Front Neurosci 16 (2022): 812837. https://doi.org/10.3389/fnins.2022.812837.
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    • Wang, Minmin, Tao Feng, Hongjie Jiang, Junming Zhu, Wuwei Feng, Pratik Y. Chhatbar, Jianmin Zhang, and Shaomin Zhang. “In vivo Measurements of Electric Fields During Cranial Electrical Stimulation in the Human Brain.” Front Hum Neurosci 16 (2022): 829745. https://doi.org/10.3389/fnhum.2022.829745.
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    • Wang, Minmin, Jiawei Han, Hongjie Jiang, Junming Zhu, Wuwei Feng, Pratik Y. Chhatbar, Jianmin Zhang, and Shaomin Zhang. “Intracranial Electric Field Recording During Multichannel Transcranial Electrical Stimulation,” December 21, 2021. https://doi.org/10.1101/2021.12.19.473336.
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    • Mac Grory, Brian, Matthew Schrag, Sven Poli, Chantal J. Boisvert, Martin S. Spitzer, Maximillian Schultheiss, Max Nedelmann, et al. “Structural and Functional Imaging of the Retina in Central Retinal Artery Occlusion - Current Approaches and Future Directions.” J Stroke Cerebrovasc Dis 30, no. 7 (July 2021): 105828. https://doi.org/10.1016/j.jstrokecerebrovasdis.2021.105828.
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    • Nam, Chang S., Zachary Traylor, Mengyue Chen, Xiaoning Jiang, Wuwei Feng, and Pratik Yashvant Chhatbar. “Direct Communication Between Brains: A Systematic PRISMA Review of Brain-To-Brain Interface.” Front Neurorobot 15 (2021): 656943. https://doi.org/10.3389/fnbot.2021.656943.
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    • Kim, Taewon, Christine Park, Pratik Y. Chhatbar, Jody Feld, Brian Mac Grory, Chang S. Nam, Pu Wang, Mengyue Chen, Xiaoning Jiang, and Wuwei Feng. “Effect of Low Intensity Transcranial Ultrasound Stimulation on Neuromodulation in Animals and Humans: An Updated Systematic Review.” Front Neurosci 15 (2021): 620863. https://doi.org/10.3389/fnins.2021.620863.
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    • Vahidy, Farhaan S., Cemal B. Sozener, Jennifer R. Meeks, Pratik Y. Chhatbar, Ciro Ramos-Estebanez, Maranatha Ayodele, Rebekah J. Richards, et al. “National Institutes of Health StrokeNet Training Core.” Stroke 51, no. 1 (January 2020): 347–52. https://doi.org/10.1161/STROKEAHA.119.027946.
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    • Shah, Shreyansh, Pratik Y. Chhatbar, Jody A. Feld, and Wuwei Feng. “Integrating tDCS into routine inpatient rehabilitation practice to boost post-stroke recovery.” Brain Stimul 13, no. 4 (2020): 953–54. https://doi.org/10.1016/j.brs.2020.04.002.
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    • Zheng, Haiqing, Bin Zhang, Pratik Y. Chhatbar, Yi Dong, Ali Alawieh, Forrest Lowe, Xiquan Hu, and Wuwei Feng. “Mesenchymal Stem Cell Therapy in Stroke: A Systematic Review of Literature in Pre-Clinical and Clinical Research.” Cell Transplant 27, no. 12 (December 2018): 1723–30. https://doi.org/10.1177/0963689718806846.
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    • Feng, Wuwei, Steven A. Kautz, Gottfried Schlaug, Caitlyn Meinzer, Mark S. George, and Pratik Y. Chhatbar. “Transcranial Direct Current Stimulation for Poststroke Motor Recovery: Challenges and Opportunities.” Pm R 10, no. 9 Suppl 2 (September 2018): S157–64. https://doi.org/10.1016/j.pmrj.2018.04.012.
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    • Chhatbar, Pratik Y., Steven A. Kautz, Istvan Takacs, Nathan C. Rowland, Gonzalo J. Revuelta, Mark S. George, Marom Bikson, and Wuwei Feng. “Evidence of transcranial direct current stimulation-generated electric fields at subthalamic level in human brain in vivo.” Brain Stimul 11, no. 4 (2018): 727–33. https://doi.org/10.1016/j.brs.2018.03.006.
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    • Chhatbar, Pratik Y., Mark S. George, Steven A. Kautz, and Wuwei Feng. “Charge density, not current density, is a more comprehensive safety measure of transcranial direct current stimulation.” Brain Behav Immun 66 (November 2017): 414–15. https://doi.org/10.1016/j.bbi.2017.08.008.
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    • Liu, Shimeng, Wuwei Feng, Pratik Y. Chhatbar, Yumei Liu, Xunming Ji, and Bruce Ovbiagele. “Mobile health as a viable strategy to enhance stroke risk factor control: A systematic review and meta-analysis.” J Neurol Sci 378 (July 15, 2017): 140–45. https://doi.org/10.1016/j.jns.2017.04.050.
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    • Chhatbar, Pratik Y., Mark S. George, Steven A. Kautz, and Wuwei Feng. “Quantitative reassessment of safety limits of tDCS for two animal studies.” Brain Stimul 10, no. 5 (2017): 1011–12. https://doi.org/10.1016/j.brs.2017.07.008.
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    • Chhatbar, Pratik Y., Rong Chen, Rachael Deardorff, Blair Dellenbach, Steven A. Kautz, Mark S. George, and Wuwei Feng. “Safety and tolerability of transcranial direct current stimulation to stroke patients - A phase I current escalation study.” Brain Stimul 10, no. 3 (2017): 553–59. https://doi.org/10.1016/j.brs.2017.02.007.
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    • O’Herron, Philip, Pratik Y. Chhatbar, Manuel Levy, Zhiming Shen, Adrien E. Schramm, Zhongyang Lu, and Prakash Kara. “Neural correlates of single-vessel haemodynamic responses in vivo.” Nature 534, no. 7607 (June 16, 2016): 378–82. https://doi.org/10.1038/nature17965.
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    • Chhatbar, Pratik Y., James R. Sawers, and Wuwei Feng. “Response to the Response to "Does tDCS Actually Deliver DC Stimulation?".” Brain Stimul 9, no. 6 (2016): 952–54. https://doi.org/10.1016/j.brs.2016.08.009.
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    • Chhatbar, Pratik Y., James R. Sawers, and Wuwei Feng. “The Proof is in the Pudding: Does tDCS Actually Deliver DC Stimulation?” Brain Stimul 9, no. 4 (2016): 625–26. https://doi.org/10.1016/j.brs.2016.05.002.
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    • Chhatbar, Pratik Y., Viswanathan Ramakrishnan, Steven Kautz, Mark S. George, Robert J. Adams, and Wuwei Feng. “Transcranial Direct Current Stimulation Post-Stroke Upper Extremity Motor Recovery Studies Exhibit a Dose-Response Relationship.” Brain Stimul 9, no. 1 (2016): 16–26. https://doi.org/10.1016/j.brs.2015.09.002.
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    • Feng, Wuwei, Jasmine Wang, Pratik Y. Chhatbar, Christopher Doughty, Douglas Landsittel, Vasileios-Arsenios Lioutas, Steven A. Kautz, and Gottfried Schlaug. “Corticospinal tract lesion load: An imaging biomarker for stroke motor outcomes.” Ann Neurol 78, no. 6 (December 2015): 860–70. https://doi.org/10.1002/ana.24510.
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    • Chhatbar, Pratik Y., and Wuwei Feng. “Data Synthesis in Meta-Analysis may Conclude Differently on Cognitive Effect From Transcranial Direct Current Stimulation.” Brain Stimul 8, no. 5 (2015): 974–76. https://doi.org/10.1016/j.brs.2015.06.001.
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    • Chhatbar, P. Y., and P. Kara. “Improved blood velocity measurements with a hybrid image filtering and iterative Radon transform algorithm.” Frontiers in Neuroscience, no. 7 JUN (January 1, 2013). https://doi.org/10.3389/fnins.2013.00106.
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    • Chhatbar, Pratik Y., and Joseph T. Francis. “Towards a naturalistic brain-machine interface: hybrid torque and position control allows generalization to novel dynamics.” Plos One 8, no. 1 (2013): e52286. https://doi.org/10.1371/journal.pone.0052286.
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    • Shen, Zhiming, Zhongyang Lu, Pratik Y. Chhatbar, Philip O’Herron, and Prakash Kara. “An artery-specific fluorescent dye for studying neurovascular coupling.” Nat Methods 9, no. 3 (January 22, 2012): 273–76. https://doi.org/10.1038/nmeth.1857.
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    • Chhatbar, Pratik Y., Lee M. von Kraus, Mulugeta Semework, and Joseph T. Francis. “A bio-friendly and economical technique for chronic implantation of multiple microelectrode arrays.” J Neurosci Methods 188, no. 2 (May 15, 2010): 187–94. https://doi.org/10.1016/j.jneumeth.2010.02.006.
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    • Saha, Subrata, and Pratik Chhatbar. “The future of implantable neuroprosthetic devices: ethical considerations.” J Long Term Eff Med Implants 19, no. 2 (2009): 123–37. https://doi.org/10.1615/jlongtermeffmedimplants.v19.i2.40.
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  • Book Sections

    • Chhatbar, P. Y., and S. Saha. “Ethical considerations of neuroprostheses.” In Implantable Neuroprostheses for Restoring Function, 413–28, 2015. https://doi.org/10.1016/B978-1-78242-101-6.00020-3.
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    • Chhatbar, P. Y., and S. Saha. “Neuroprostheses: Implications of the current and future state of the science and technology.” In Neurotechnology: Premises, Potential, and Problems, 93–105, 2012. https://doi.org/10.1201/b11861.
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  • Conference Papers

    • Mac Grory, Brian C., Anusha Boyanpally, Christoph Stretz, Sleiman El-Jamal, Shreyansh Shah, Nada El-Husseini, Pratik Y. Chhatbar, et al. “Abstract MP46: Internal Carotid Artery Web and Acute Ischemic Stroke - A Systematic Review and Meta-Analysis.” In Stroke, Vol. 52. Ovid Technologies (Wolters Kluwer Health), 2021. https://doi.org/10.1161/str.52.suppl_1.mp46.
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    • Mac Grory, Brian C., Shadi Yaghi, Shreyansh Shah, Pratik Y. Chhatbar, Carmelo Graffagnino, Scott Le, Wayneho Kam, et al. “Abstract P592: Admission Hyperglycemia is Associated With Subsequent Ischemic Stroke After Transient Ischemic Attack or Minor Stroke: A Secondary Analysis of the POINT Trial.” In Stroke, Vol. 52. Ovid Technologies (Wolters Kluwer Health), 2021. https://doi.org/10.1161/str.52.suppl_1.p592.
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    • Chen, M., C. Peng, T. Kim, P. Y. Chhatbar, M. Muller, W. Feng, and X. Jiang. “Biosafety of low-intensity pulsed transcranial focused ultrasound brain stimulation - A human skull study.” In Proceedings of Spie  the International Society for Optical Engineering, Vol. 11593, 2021. https://doi.org/10.1117/12.2582487.
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    • Feng, Wayne, Pratik Chhatbar, Mark George, Racheal Deardorff, and Steven Kautz. “Safety and Tolerability of Transcranial Direct Current Stimulation to Stroke Patients - A Phase I Current Escalation Study.” In Annals of Neurology, 82:S142–S142. WILEY, 2017.
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    • Chhatbar, Pratik, Hernan Bayona, Gottfried Schlaug, and Wayne Feng. “Correlation of NIH Stroke Scale and Fugl-Meyer Motor Scales in a Longitudinal Stroke Recovery Study: Implication for Feasibility Survey for Stroke Rehabilitation Trial.” In Stroke, Vol. 48, 2017.
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    • Feng, Wayne, Hernan Bayona, Steve Kautz, and Pratik Chhatbar. “A Simple Bedside Grading Scale Can Effectively Predict Severe Post-Stroke Upper-Extremity Spasticity.” In Neurology, Vol. 86. LIPPINCOTT WILLIAMS & WILKINS, 2016.
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    • Feng, Wuwei, Jan A. Enabore, Steve Kautz, Robert J. Adams, and Pratik Chhatbar. “Dose Response Relationship in Transcranial Direct Current Stimulation Stroke Motor Recovery Studies.” In Stroke, Vol. 46. LIPPINCOTT WILLIAMS & WILKINS, 2015.
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    • Folsom, Jamie, Nnadozie Ezerioha, Pratik Chhatbar, Swaroop Pawar, Christina Holmstedt, Edward Jauch, Bruce Ovbiagele, Robert J. Adams, and Wuwei Wayne Feng. “The Impact of Contrast Based CTA/CTP Brain Attack Protocol on Kidney Function.” In Stroke, Vol. 46. LIPPINCOTT WILLIAMS & WILKINS, 2015.
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    • Bae, J., L. S. Giraldo, P. Chhatbar, J. Francis, J. Sanchez, and J. Principe. “Stochastic kernel temporal difference for reinforcement learning.” In Ieee International Workshop on Machine Learning for Signal Processing, 2011. https://doi.org/10.1109/MLSP.2011.6064634.
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    • DiStasio, M. M., P. Y. Chhatbar, and J. T. Francis. “Sparse coding of movement-related neural activity.” In 2011 Ieee Signal Processing in Medicine and Biology Symposium, Spmb 2011, 2011. https://doi.org/10.1109/SPMB.2011.6120134.
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    • Sanchez, J. C., A. Tarigoppula, J. S. Choi, B. T. Marsh, P. Y. Chhatbar, B. Mahmoudi, and J. T. Francis. “Control of a center-out reaching task using a reinforcement learning Brain-Machine Interface.” In 2011 5th International Ieee/Embs Conference on Neural Engineering, Ner 2011, 525–28, 2011. https://doi.org/10.1109/NER.2011.5910601.
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    • Bae, Jihye, Pratik Chhatbar, Joseph T. Francis, Justin C. Sanchez, and Jose C. Principe. “Reinforcement learning via kernel temporal difference.” In Annual International Conference of the Ieee Engineering in Medicine and Biology Society. Ieee Engineering in Medicine and Biology Society. Annual International Conference, 2011:5662–65, 2011. https://doi.org/10.1109/iembs.2011.6091370.
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    • Chhatbar, Pratik Y., and Joseph T. Francis. “Comparison of force and power generation patterns and their predictions under different external dynamic environments.” In Annu Int Conf Ieee Eng Med Biol Soc, 2010:1686–90, 2010. https://doi.org/10.1109/IEMBS.2010.5626832.
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