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«Education Doctor of Philosophy, Kyoto University 2004 Apr - 2007 Mar Department of Physics, Graduate School of Science, Kyoto University, Kyoto, ...»

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Hideaki Shimazaki, Ph.D

RIKEN Brain Science Institute

2-1 Hirosawa, Wako, Saitama

351-0198 Japan

Phone: +81-48-467-9644

Fax: +81-48-467-9670

E-Mail: shimazaki@brain.riken.jp

HP: http://goo.gl/viSNG

Education

Doctor of Philosophy, Kyoto University 2004 Apr - 2007 Mar

Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan.

Supervisor: Prof. Shigeru Shinomoto

Thesis title: Recipes for selecting the bin size of a histogram.

Master of Arts (Neuroscience), Johns Hopkins University 2000 Aug - 2003 Nov Department of Neuroscience, School of Medicine, Baltimore, MD, USA.

Supervisor: Prof. Ernst Niebur Thesis title: Communication over distributed neural systems.

Bachelor of Engineering, Keio University 1996 Apr - 2000 Mar Department of Applied Physics and Physico-Informatics, Yokohama, Japan.

Supervisor: Prof. Yutaka Tomita, Prof. Takeshi Aihara, and Prof. Minoru Tsukada Dissertation title: Identification of characteristic curve of synaptic modification by spike timing: approach with optical recording method.

Research Experience RIKEN Brain Science Institute, Research Scientist 2011 Apr-Present Postdoctral researcher at Taro Toyoizumi lab Massachusetts Institute of Technology, Visiting Researcher 2009 Dec-2011 Mar Postdoctral researcher at Emery N. Brown lab RIKEN Brain Science Institute, Visiting Researcher 2007 Aug-2011 Mar Postdoctral researcher at Sonja Gruen lab JSPS* Research Fellow at RIKEN Brain Science Institute 2008 Apr-2011 Mar JSPS* Research Fellow at Kyoto University 2006 Apr-2008 Mar * Japan Society for the Promotion of Science Teaching Experience Lectures International Christian University, Tokyo, Japan 2014 Dec – Present An undergraduate course on “Statistical Physics” at the Department of Material Science of the International Christian University. The course provides concepts in statistical physics including laws of thermodynamics, state functions, and the canonical ensemble formalism.

RIKEN Brain Science Institute, Saitama, Japan 2014 Dec – Present An introductory course on statistics titled “Statistics for Neuroscience I and II” as a part of lecture courses of the RIKEN Brain Science Training Program for selected graduate students. The course covers classical statistical tests and multivariate analysis. Lecture notes are available at http://goo.gl/gPLDG0.

Graduate School of Science and Technology at Meiji University, Tokyo, Japan 2013 May Introductory courses of Neuroscience in Japanese. Course titles: “Introduction to sensory systems, perception and neural coding studies” and “Introduction to neural decoding”.

The Institute for Research in Fundamental Sciences (IPM), Tehran, Iran 2013 Mar Invited two-week lecture course titled “Introduction to statistical models of neural spike train data” at School of Cognitive Sciences, IPM. This course covered recent modeling approaches for neuroscientific data with an introduction to a point process theory, generalized linear modeling, and adaptive filtering theory. The course materials are available at http://goo.gl/vXuGOH.

Supervision of graduate students

Ms. Safura Rashid Shomali (IPM, Tehran) 2013 Dec – Present Co-supervision of Ph.D. thesis with Prof. Majid Nili-Ahmadabadi. Ms. Shomali is a graduate student at IPM in Tehran, Iran. I met her when I gave a lecture course at her institute in March 3-12, 2013. Later she asked for my supervision, and I was officially appointed as a co-supervisor for her PhD thesis with Prof. Majid Nili- Ahmadabadi on Dec 4, 2013. She visited RIKEN during July 23- September 23 in 2014. I am supervising her project on theoretical analysis of the impact of a presynaptic input on a leaky integrate-and-fire neuron receiving noisy balanced inputs.

Mr. Christian Donner (BCCN Berlin) 2014 Jun – 2015 Apr Superviser of a summer-intern project at RIKEN Brain Science Institute and co-superviser of his master thesis at Bernstein Center for Computational Neuroscience (BCCN) Berlin with Prof. Klaus Obermayer. During 5/26-8/29 in 2014, Mr. Donner stayed at RIKEN BSI to study the dynamic model of neural interactions under my supervision, as one of three lab-rotation projects required for his Master’s degree at BCCN Berlin. During his stay, he introduced an analytical approximation method to make the model applicable to large-scale analysis. Motivated by his achievement, he selected this topic as his Master thesis, and I co-supervise his project with Prof. Klaus Obermayer.

Publications Journals MaBouDi H., Shimazaki H., Amari S., Soltanian-Zadeh H., Representation of higher-order statistical structures in natural scenes via spatial phase distributions. Vision Research, 2015. in press Shimazaki H., Sadeghi K., Ishikawa T., Ikegaya Y., Toyoizumi T., Simultaneous silence organizes structured higher-order interactions in neural populations. Scientific Reports, 5, 9821, 2015.

Shimazaki H., Amari S., Brown E. N., and Gruen S., State-space analysis of time-varying higher-order spike correlation for multiple neural spike train data. PLOS Computational Biology, 8(3): e1002385, 2012.

Shimazaki H. Analysis of multiple neural spike train data using the log-linear model. (In Japanese) The brain and neural networks, 1(4), 194-203, 2011.

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Shimazaki H. and Shinomoto S. A method for selecting the bin size of a time histogram. Neural Computation, Vol.

19(6), 1503-1527, 2007.

Shimazaki H. and Niebur E. Phase transitions in multiplicative competitive processes. Physical Review E, 72(1), 011912, 2005.

Tsukada M., Aihara T., Kobayashi Y., and Shimazaki H. Spatial analysis of spike-timing-dependent LTP and LTD in the CA1 area of hippocampal slices using optical imaging, Hippocampus, 15(1), 104-109, 2005.

Kobayashi Y, Shimazaki H., Aihara T., Tsukada M. Spatial distributions of hippocampal LTP/LTD induced by electrically from schaffer collaterals and stratum oriens with relative timing. (In Japanese) The brain and neural networks, 8 (2), 57-64, 2001.

Preprint Shimazaki H. Neurons as an Information-theoretic Engine. arXiv:1512.07855, 2015.

Refereed conference proceedings Shimazaki H. Single-trial estimation of stimulus and spike-history effects on time-varying ensemble spiking activity of multiple neurons: a simulation study. Journal of Physics: Conference Series, 473 012009, 2013.

Shimazaki H., Amari S., Brown E. N., and Gruen S. State-space Analysis on Time-varying Correlations in Parallel Spike Sequences. Proc. IEEE ICASSP, 3501-3504, 2009.

Shimazaki H. and Shinomoto S. A recipe for optimizing a time-histogram. Advances in Neural Information Processing Systems, Vol. 19, 1289-1296, 2007.

Shimazaki H. and Niebur E. Correlated multiplicative modulation in coupled oscillator systems: a model of selective attention. Progress of Theoretical Physics Supplement, No.161 336-339, 2006.

Book Chapter

Shimazaki H. Japanese translation of Principles of Neural Science 5th ed. Kandel E.R. et al. editors, Appendix F:

Theoretical Approaches to Neuroscience: Examples from Single Neurons to Networks by Abbott L.F., Fusi S., and Miller K.D., p1567-1583, Medical Science International Inc., 2014. Original: p1601-1618, McGraw-Hill, 2012.

Selected invited talks Bernstein Center of Computational Neuroscience Berlin, Berlin, Germany. Apr 2015. Host Prof. Klaus Obermayer.

Title: Simultaneous silence explains structured higher-order interactions of neural populations.

ELC International Meeting on ''Inference, Computation, and Spin Glasses'' (ICSG2013), Sapporo, Japan. Jul 2013.

Title: State-space analysis of time-varying higher-order interactions: its applications to neuroscience.

The 3rd Mathematical Neuroscience Workshop in School of Mathematics, Institute for Research in Fundamental Sciences (IPM). Tehran, Iran. Mar 2013. Title: The simultaneous silence of neurons explains higher-order interactions in ensemble spiking activity.

Workshop on Neural Information Flow, Kyoto University, Kyoto, Japan. Jun 2012. Title: Tracking dynamic neural interactions in awake behaving animals.

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IEEE ICASSP2009, Special Session on `Signal Processing for Neural Spike Trains', Taipei, Taiwan. Apr 2009.

Title: State-space analysis on time-varying correlations in parallel spike sequences.

NIPS 2008, Workshop on `Statistical Analysis and Modeling of Response Dependencies in Neural Populations', Whistler, Canada. Dec 2008. Title: State-space analysis on time-varying higher-order spike correlations.

Riken Brain Science Institute Forums, Wako, Japan. Host: Dr. Sonja Gruen. Apr 2007. Title: A recipe for optimizing a time histogram of spike data.

The Boadian Seminar at Mind/Brain Institute, Johns Hopkins University. Baltimore, USA. Host: Dr. Ernst Niebur.

Mar 2007. Title: A recipe for constructing a peri-stimulus time histogram.

Awards

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Academic service Journals reviewed for: PLOS Computational Biology (3 times), Neural Networks (3), Springer Encyclopedia (3), Computational Intelligence and Neuroscience (3), Journal of Computational Neuroscience, Neural Computation, Journal of Neuroscience Methods, Physical Review E, PLOS ONE, Cognitive Neurodynamics, Applied Mathematical Modeling, PeerJ.

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List of all presentations ■ 2015 Donner C. and Shimazaki H., Approximation methods for inferring time-varying interactions of a large neural population. Workshop in Statistical Methods for Understanding Neural Systems at Neural Information Processing Systems (NIPS) 2015. Montreal Canada, Dec 11, 2015 POSTER Accepted Shimazaki H. Simultaneous silence explains structured higher-order interactions of neural populations.

Juelich Research Center. Juelich, Germany. May 5, 2015 INVITED TALK Shimazaki H. Simultaneous silence explains structured higher-order interactions of neural populations.

Bernstein Center of Computational Neuroscience Berlin. Berlin, Germany. Apr 28, 2015 TALK ■ 2014 Sharp T., Shimazaki H., Isomura Y., Fukai T. State-space analysis of behaviour- and layer-dependent synchrony in motor cortex during volitional arm movement. Society for Neuroscience (SfN) 2014, Washinton DC, USA. Nov 16, 2014. POSTER Sharp T., Shimazaki H., Isomura Y., Fukai T. Behaviour- and layer-dependent synchrony in motor cortex during volitional arm movement. Neuro2014, Yokohama, Japan. Sep 11, 2014. POSTER Shomali S.R., Ahmadabadi M.N., Shimazaki H., Rasuli N. S. Theoretical study on spike-timing probability in a pair of pre-post synaptic neurons. Neuro2014, Yokohama, Japan. Sep 11,2014. POSTER

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Sharp T., Shimazaki H., Isomura Y., Fukai T. Behaviour- and layer-dependent synchrony in motor cortex during volitional arm movement. Workshop on data mining in neuroscience. National Institute of Informatics, Tokyo, Japan. May 28-29, 2014 TALK MaBouDi H., Shimazaki H., Abouzari M., Amari S, Soltanian-Zadeh H. Statistical inference for directed phase coupling in neural oscillators. Computational and Systems Neuroscience (Cosyne) 2014. Salt Lake City, USA. Feb 27 POSTER Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T. Structured higher-order interactions explain the simultaneous silence of neural populations. Mechanism of Brain and Mind, Rusutsu, Hokkaido, Japan. Jan 8-10, 2014 POSTER ■ 2013 Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T., The simultaneous silence of neurons explains structured higher-order interactions in ensemble spiking activity. Society for Neuroscience (SfN). San Diego, USA.

Nov 9-13 POSTER Shimazaki H., State-space Analysis of Time-varying Higher-order Interactions: its Applications to Neuroscience. ELC International Meeting on ''Inference, Computation, and Spin Glasses'' (ICSG2013).

Sapporo, Japan. Jul 28 INVITED TALK Shimazaki H., Higher-order interactions in population activity of hippocampal CA3 neurons. Workshop on statistical analysis of neurophysiological and clinical data, Kyoto, Japan. Jul 8-9 TALK Shimazaki H., Estimating Time-varying Higher-order Neuronal Interactions in Awake Behaving Animals.

Modeling Neural Activity: Statistics, Dynamical Systems, and Networks, Lihue, Hawaii, USA. 2013 Jun 26-28 TALK Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T., The simultaneous silence of neurons explains higherorder interactions in ensemble spiking activity. Neuro2013, Kyoto, Japan. Jun 20 POSTER Shimazaki H. Estimating dynamic neural interactions in awake behaving animals. The 3rd Mathematical Neuroscience Workshop in School of Mathematics, Institute for Research in Fundamental Sciences (IPM).

Tehran, Iran. Mar 13 INVITED TALK Shimazaki H. The Simultaneous Silence of Neurons Explains Higher-Order Interactions in Ensemble Spiking Activity. The 3rd Mathematical Neuroscience Workshop in School of Mathematics, Institute for Research in Fundamental Sciences (IPM). Tehran, Iran. Mar 14 INVITED TALK Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T. The simultaneous silence of neurons explains structured higher-order interactions in spontaneous spiking activity. Dialog between Neuroscience and Statistics, Institute of Mathematics and Statistics, Tokyo, Japan. Feb 18-19 TALK ■ 2012 Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T. Joint inactivation statistics of population spiking activities. RIKEN BSI Retreat 2012, Karuizawa, Japan. Nov 12-13 POSTER Shimazaki H. The simultaneous silence of neurons explains structured higher-order interactions in ensemble spiking activity. RIKEN BSI Lunch Seminar 2012, Wako, Japan. Nov 8 TALK

–  –  –

Shimazaki H. Tracking Dynamic Neural Interactions in Awake Behaving Animals. Workshop on neural information flow, Kyoto University, Kyoto, Japan. Jun 20 INVITED TALK Shimazaki H., Sadeghi K., Ikegaya Y., Toyoizumi T. The simultaneous silence of neurons explains higherorder interactions in ensemble spiking activity. Computational and Systems Neuroscience (Cosyne) 2012.



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