Tokuda Isao

功イサオ | Tokuda Isao

Affiliation and department：
Job title： Professor
Other affiliations (2)：

Ritsumeikan University Research Organization of Science and Technology, Advanced Micro/Nano System Technology Research Center
Ritsumeikan University Graduate School of Science and Engineering

Homepage URL (1)： http://www.ritsumei.ac.jp/~isao

Research field (3)： Mechanics and mechatronics , Robotics and intelligent systems , Biological, health, and medical informatics

Research keywords (1)： Nonlinear dynamics, Synchronization, Time series analysis, Voice production, Coupled oscillators

Research theme for competitive and other funds (33)：

2024 - 2029 Experimental studies on the primate foundations for the control of vocal fold vibration in human speech.
2024 - 2027 Physical modeling, excised larynx experiment, and mathematical modeling of vocal membrane oscillations and their implications to the evolution of human language
2023 - 2027 Physical modeling, excised larynx, mathematical modeling of voice instability induced by vocal membranes and their implications to the evolution of language
2020 - 2024 Plant growth instability originated from disturbance of circadian rhythm and optimization of nonparametric cultivation environment
2019 - 2024 Experimental studies of the phonation in non-human primates for elucidating the speech evolution

2020 - 2023 実体模型および摘出喉頭による仮声帯振動機構の解明と歌唱、医療、言語進化への展開

2019 - 2022 Object Carrying and Dynamic Manipulation Systems Applied with Locomotion Control Techniques of Underactuated Robots

2017 - 2022 Optical Measurement and Control of Multiareal Brain Information Dynamics in Cognition and Movement

2018 - 2021 Understanding of neuronal circuits that are related circadian clock regulated sleep/wakefulness

2016 - 2020 Biological studies of the diversity of phonatory mechanism in non-human primates and of the evolutionary process for human phonation with medical engineering approaches

2016 - 2019 Creation of Novel Functions for Locomotion Robots Based on Optimal Fusion of Sliding Effect and Body Shape

2016 - 2019 Mathematical model for circadian control of estrus cycles and its implication to infertility treatment

2016 - 2019 Rapid identification of environmental response model by uncorrelated multi-environmental cultivation tests

2015 - 2018 Mathematical modeling of wild transcriptome and reproduction by plant factory

2014 - 2018 Optimal design method realizing the maximal limit of injection-locking and its applications.

2014 - 2017 Plasticity of the environmental adaptation in mice exposed to a "Social Jet-lag" condition

2013 - 2017 A novel kinase signaling involved in the dual regulation of behavior and metabolism

2014 - 2016 Development of a detection method for circadian rhythm sleep disorders based on clock gene expression

2013 - 2016 3-dimensional observation of vocal fold vibration and profiling of vocal dynamics

2012 - 2016 Clock gene functions in the development of circadian system and effects of environmental factors

2011 - 2015 Construction of three-dimensional nonlinear speech production model and analysis of pathological voice

2011 - 2014 Entrainment ability maximization in nonlinear oscillators by using calculus of variations, and its applications to practical design problems

2011 - 2013 Oscillator network modeling of the circadian rhythms and its application to their control

2010 - 2012 Study on the measurement and modeling from higher-order functions to peripheral functions involved in speech production

2008 - 2010 Oscillator network modeling of SCN neurons and its application to circadian rhythm

2009 - 2009 数理モデルに基づく植物概日リズムの制御技術の開発と植物工場への応用

2008 - 2009 定量的数理方程式の構築による植物概日リズムの解明とその植物工場への応用

2007 - 2009 An articulatory, phonetic and linguistic comparison of emotional speech

2007 - 2009 音声中の非言語情報の生成・知覚の特性解析と多言語間コミュニケーションへの応用

2005 - 2007 非線形予測子係数族による結合振動子系の時系列解析と実データへの応用

2002 - 2005 非線形予測子パラメータ族を用いた結合カオス振動子系の時系列解析手法の開発

2000 - 2001 非線形予測子パラメータ族によるカオス時系列の非定常解析

1998 - 1999 最適化問題を解くカオス的力学系の漸近測度の自動設計

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Papers (124)：

Kanta Nakamura, Mayuka Kanaya, Daisuke Matsushima, Jacob C. Dunn, Hideki Hirabayashi, Kiminori Sato, Isao T. Tokuda, Takeshi Nishimura. Twin vocal folds as a novel evolutionary adaptation for vocal communications in lemurs. Scientific Reports. 2024. 14. 1
Yoshiki Miyawaki, Atsuhiro Nishida, Keisuke Fukushima, Aoi Matsumoto, Teruki Hamano, Yukiya Mori, Mamoru Nagano, Isao T. Tokuda, Yasufumi Shigeyoshi, Koichi Node, et al. Chronic circadian misalignment is a risk factor for hair growth impairment. iScience. 2024. 27. 10. 110974-110974
Longchuan Li, Shugen Ma, Isao Tokuda, Zaiyang Liu, Zhenxuan Ma, Yang Tian, Shuai Kang. Embodying rather than encoding: Towards developing a source-filter theory for undulation gait generation. Biomimetic Intelligence and Robotics. 2024. 4. 3. 100173-100173
Rintaro Miyazaki, Tomoki Yoshitani, Mayuka Kanaya, Shigehiro Miyachi, Akihisa Kaneko, Yuki Kinoshita, Kanta Nakamura, Takeshi Nishimura, Isao T Tokuda. Ventricular fold oscillations lower the vocal pitch in rhesus macaques. The Journal of experimental biology. 2023. 226. 12
Mayuka Kanaya, Takuma Matsumoto, Taisuke Uemura, Rei Kawabata, Takeshi Nishimura, Isao T. Tokuda. Physical modeling of the vocal membranes and their influence on animal voice production. JASA Express Letters. 2022. 2. 11

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MISC (67)：

西原正継, 浅野文彦, 高須奈々, 中村渉, 徳田功. Effect of shift-timing on recovery period from jet-lag in young and middle-aged mice. 時間生物学. 2021. 27. 2
大原隆之, 中村孝博, 中村渉, 徳田功. Mathematical model for circadian regulation of ovulation timing. 時間生物学. 2019. 25. 2
Cooperation between noise and neural activity in the cortical network model. 2017. 117. 288. 15-19
徳田功, 嘉田久嗣, 寺前順之助. Suppression of Pathological Synchronization in Cortical Networks (複雑コミュニケーションサイエンス). 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報. 2016. 116. 285. 5-8
Nonlinear dynamics of turbulent pool fire. 2016. 116. 272. 39-42

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Books (2)：

同期理論の基礎と応用
丸善 2009
カオスと時系列
培風館 2002

Committee career (13)：

2013 - 電子情報通信学会NOLTAサブソサイエティ会計幹事
2012 - 電子情報通信学会基礎境界ソサイエティ電子広報担当幹事
2012 - 電子情報通信学会Web企画小委員会委員
2008 - 2011 電子情報通信学会和文論文誌(A)編集委員
2011 - 電子情報通信学会・第二種研究会・複雑コミュニケーションサイエンス時限研究専門委員会・専門委員

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Association Membership(s) (4)：

Japanese Neural Network Society , THE JAPAN SOCIETY OF LOGOPEDICS AND PHONIATRICS , Acoustical Society of Japan , "The Institute of Electronics, Information and Communication Engineers (IEICE)"

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