Shreyas Punacha

Shreyas Punacha

Postdoctoral Researcher

University of Washington, Seattle

I am a Postdoctoral scholar in the University of Washington, Seattle. My research focuses on the intricate relationship between the cortical and biomechanical changes during the oromotor behaviour and their implications in the onset and progression of Alzheimer’s disease and other age-related dementias.

In our laboratory, we use chronically implanted microelectrode arrays to capture the cortical activity in the orofacial sensorimotor cortex while simultaneously tracking the precise movements of the tongue and the jaw in three dimensions using a biplanar video-radiography setup. These observations are made during the natural feeding behaviour of both the young and old macaques, providing valuable insight into the complex mechanisms at play.

My academic background is rooted in Physics, with a specialization in computational biology. I hold a PhD from the Physics department at National Institute of Technology Karnataka, Surathkal in India. My doctoral research was focused on the dynamics and control of spiral waves that cause life-threatening cardiac arrhythmias using low voltage electric fields. I have also explored pattern formation in Belousov-Zhabotinsky chemical reaction and tackled computational problems in Blackhole Thermodynamics and Fluid Gravity.

I have excellent knowledge of programming with Matlab, Python and C on cluster architectures. For my research, I have designed algorithms and developed parallel programs using Message Passing Interface for various ionic and electrophysiological cardiac models in two and three dimensions. I have experience working with experimentalists on imaging, analysis and building computational models to validate their results. Besides my research, I have mentored several masters students and worked as a teaching assistant for several courses during my PhD.

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Interests
  • Computational Biology
  • Neuroscience
  • Tongue and Mandible Kinematics
  • Excitable Media
  • Cardiac Arrhythmias
  • Low-voltage defibrillation
  • Blackhole thermodynamics
  • Fluid Gravity
Education
  • PhD in Physics, 2021

    National Institute of Technology Karnataka, Surathkal, India.

  • M.Sc in Physics, 2014

    Mangalore University, Konaje, Karnataka, India.

  • B.Sc. in Physics, 2012

    Vivekananda College, Puttur, Karnataka, India.

Publications

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(2024). Spinning LQG black hole as a particle accelerator.

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(2024). Lyapunov exponents and phase structure of Lifshitz and hyperscaling violating black holes. Journal of Cosmology and Astroparticle Physics.

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(2024). Effect of electric field chirality on the unpinning of chemical waves in the Belousov--Zhabotinsky reaction. Chaos, Solitons & Fractals.

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(2024). Effects of healthy aging on tongue-jaw kinematics during feeding behavior in rhesus macaques. bioRxiv.

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(2024). Thermodynamics, phase transition and Joule–Thomson expansion of 4-D Gauss–Bonnet AdS black hole. International Journal of Modern Physics A.

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(2023). Dynamic phase transition of black holes in massive gravity. Annals of Physics.

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(2023). Dynamics and kinetics of phase transition for regular AdS black holes in general relativity coupled to nonlinear electrodynamics. International Journal of Modern Physics A.

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(2023). Theory and experiments of spiral unpinning in the Belousov--Zhabotinsky reaction using a circularly polarized electric field. Chaos: An Interdisciplinary Journal of Nonlinear Science.

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(2022). Dynamics of Chemical Excitation Waves Subjected to Subthreshold Electric Field in a Mathematical Model of the Belousov-Zhabotinsky Reaction. Nonlinear Dynamics and Applications: Proceedings of the ICNDA 2022.

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(2022). Mechanism of Spiral Wave Unpinning in the Belousov--Zhabotinsky Reaction with a DC Electric Field. The Journal of Physical Chemistry C.

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(2020). Photon orbits and thermodynamic phase transition of regular AdS black holes. Phys. Rev. D.

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(2019). Spiral wave unpinning facilitated by wave emitting sites in cardiac monolayers. Proceedings of the Royal Society A.

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(2019). Unpinning spiral wave anchored to two obstacles. Indian Academy of Sciences Conference Series (2019) 2:1.

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