About me

Hi! My name is Shunsuke Kamiya (call me Shun, SK, or whatever you like). 

I am currently a Ph.D. candidate at the University of Tokyo (supervisor: Masafumi Oizumi). Before pursuing my Ph.D. career, I used to be a surgical resident at a hospital in Okinawa prefecture (southernmost & westernmost island of Japan).

My main research interest lies in how we can draw out meaningful information from high-dimensional neural dynamics. I try to answer the question with mathematical frameworks including dynamic mode decomposition (DMD), and Koopman operator method. 

I'm from Japan and I'm now living in Tokyo with my wife and two kids.

Keywords of Interest

Neural dynamics, Dynamic mode decomposition, Koopman operator, Operator theoretic data analysis, Consciousness

Work Experience

2025 Apr- Present Researcher at Matsuo-Iwasawa lab, Department of Technology Management for Innovation, the University of Tokyo

2022 Apr - 2025 Mar Research Fellowships for Young Scientists (DC1) of Japan Society for Promotion of Science

2019 Oct - 2025 Mar World-Leading Innovative Graduate Study Program of Advanced Basic Science Course 

2017 Apr - 2019 Mar Surgical resident at Okinawa Chubu Hospital

2011 Apr - 2016 Mar Mathematics tutor at Tetsuryokukai

Education

2021 Oct - 2025 Mar Ph.D. student, Graduate School of Arts and Sciences, the University of Tokyo (supervisor: Masafumi Oizumi)

2019 Sep - 2021 Sep M.A., Graduate School of Arts and Sciences, the University of Tokyo (supervisor: Masafumi Oizumi)

2011 Apr - 2017 Mar Bachelor of Medicine, Department of Medicine, the University of Tokyo

Publications

Peer Reviewed Journals

S. Kamiya, G. Kawakita, S. Sasai, J. Kitazono, M. Oizumi. "Optimal Control Costs of Brain State Transitions in Linear Stochastic Systems." Journal of Neuroscience (2023) 43 (2): 270-281.

G. Kawakita, S. Kamiya, S. Sasai, J. Kitazono, M. Oizumi. “Quantifying Brain State Transition Cost via Schrödinger's Bridge.”  Network Neuroscience (2022) 6 (1): 118–134. 

Preprints & Openreviews

S. Kamiya, J. Kitazono, M. Oizumi. "Koopman Operator Based Dynamical Similarity Analysis for Data-driven Quantification of Distance between Dynamics." ICLR 2024 Workshop Re-Align (2024).

Japanese

S. Kamiya, M. Oizumi. "Overview and application of dynamic mode decomposition - Towards applications to control problems in neural systems." The Brain & Neural Networks, (2023) 30 (2): 73-83.

Presentations

International Conferences

1. S. Kamiya, T. Mitamura, M. Ikeda, M. Oizumi. "Unsupervised Neuronal Matching with Spontaneous Neuronal Activity."  ICLR 2025 Workshop Re-Align, Singapore. April 2025. (peer reviewed, poster presentation)

2. S. Kamiya, J. Kitazono, M. Oizumi. "Koopman Operator Based Dynamical Similarity Analysis for Data-driven Quantification of Distance between Dynamics." Association for the Scientific Study of Consciousness, Tokyo, Japan, July 2024. (peer reviewed, oral presentation)

3. S. Kamiya, J. Kitazono, M. Oizumi. "Koopman Operator Based Dynamical Similarity Analysis for Data-driven Quantification of Distance between Dynamics."  ICLR 2024 Workshop Re-Align, Vienna, Austria. May 2024. (peer reviewed, poster presentation)

4. S. Kamiya, G. Kawakita, S. Sasai, J. Kitazono, M. Oizumi. "Optimal Control Costs of Brain State Transitions in Linear Stochastic Systems." International Conference on Mathematical Neuroscience, Online, July 2022. (peer reviewed, oral presentation)

Domestic Conferences

5. S. Kamiya , T. Mitamura, M. Ikeda, M. Oizumi. "Data-driven Neuronal Matching of C.elegans."  34'th JNNS, Sapporo, September 2024. (peer reviewed, oral presentation)

6. S. Kamiya, G. Kawakita, S. Sasai, J. Kitazono, M. Oizumi. "Optimal Control Costs of Brain State Transitions in Linear Stochastic Systems." Neuro 2022, Okinawa, July 2022. (peer reviewed, oral presentation)

7. S. Kamiya, G. Kawakita, S. Sasai, J. Kitazono, M. Oizumi. “Quantifying Optimal Control Cost in Linear Stochastic Neural Systems.” 31'st JNNS, Online, September. (peer reviewed, oral presentation) won Encouragement Award

8. S. Kamiya, G. Kawakita, S. Sasai, J. Kitazono, M. Oizumi. “Control Costs for State Transitions in Stochastic Neural Systems.” IEICE, Neurocomputing Workshop, Online, March 2021. (no peer review, oral)

9.  S. Kamiya, T. Murakami, Y. Sambonmatsu, T. Kato, M. Ie, K. Sunagawa. “Median Sternotomy for a Substernal Goiter – A Case Report.” 126'th Okinawa Association of Medical Sciences, June 2018. (no peer review, poster)

10. S. Kamiya, T. Murakami, Y. Sambonmatsu, T. Kato, M. Ie, K. Sunagawa. “Graft-preserving Open Aneurysm Plication and Branch Ligation for Type 2 Endoleak after Endovascular Aortic Replacement.” 125'th Okinawa Association of Medical Sciences, June 2018. (no peer review, poster)

Domestic Workshops

11. S. Kamiya , T. Mitamura, M. Ikeda, M. Oizumi. "Unsupervised Neuronal Matching with Spontaneous Neuronal Activity." Workshop on Interdisciplinary Collaboration between Mathematical Sciences and Neuroscience, March 2025. (peer review, poster)

12. S. Kamiya , T. Mitamura, M. Ikeda, M. Oizumi. "Unsupervised Neuronal Matching with Spontaneous Neuronal Activity."  Riken AIP Seminar March 2025. (no peer review, poster)

Invited Talks

1. "Quantification of Distance between Dynamics using Koopman Operator Based Dynamic Similarity Analysis.” Data-driven analysis for dynamical systems using Koopman operators in Besov spaces., Fukuoka, Japan. June 2024.

2. "Optimal Control Costs of Brain State Transitions in Linear Stochastic Systems." Network Science Workshop 2022, Kyoto, Japan. August 2022.

Awards

2021 Encouragement Award, Department of Multidisciplinary Sciences, Graduate School of Arts and Sciences, the University of Tokyo

2021 Encouragement Award, 31'st JNNS

2009 Japan Mathematical Olympiad,  rank A

Certificates

2017 Feb Medical License in Japan

2017 Mar USMLE Step 1: PASS, Score 261

Others

Notes on mathematics

• Notes on Analysis

• Notes on Karatzas & Shreve, "Brownian Motion and Stochastic Calculus" in a self-study group