Tatsuya Haga

Tatsuya Haga 芳賀 達也

Computational Neuroscientist @ NICT-CiNet

Research of neural network modeling, computational theory of hippocampus and entorhinal cortex. 

情報通信研究機構　脳情報通信融合研究センター (NICT-CiNet)の計算神経科学者

ニューラルネットワークモデリング、海馬と嗅内皮質の計算理論を研究しています。

Mail: tatsuyahaga[at]nict.go.jp

Recent Activity 最近の活動

2025/4/28 New article published: Ghandour, Haga, Ohkawa et al. "Parallel processing of past and future memories through reactivation and synaptic plasticity mechanisms during sleep" in Nature Communications https://www.nature.com/articles/s41467-025-58860-w 

2025/3/11 New article published: Haga et al. "A unified neural representation model for spatial and conceptual computations" in PNAS https://www.pnas.org/doi/10.1073/pnas.2413449122 

Journal Articles 発表論文

1. Khaled Ghandour#, Tatsuya Haga#, Noriaki Ohkawa#, Chi Chung Alan Fung, Masanori Nomoto, Mostafa R. Fayed, Hirotaka Asai, Masaaki Sato, Tomoki Fukai, Kaoru Inokuchi　(2025) Parallel processing of past and future memories through reactivation and synaptic plasticity mechanisms during sleep. Nature Communications, Vol. 16, 3618. doi: 10.1038/s41467-025-58860-w URL: https://www.nature.com/articles/s41467-025-58860-w (#: equal contribution)

2. Tatsuya Haga, Yohei Oseki, Tomoki Fukai (2025) A unified neural representation model for spatial and conceptual computations. Proceedings of the National Academy of Sciences, Vol. 122, Issue. 11,e2413449122. doi: 10.1073/pnas.2413449122 URL: www.pnas.org/doi/10.1073/pnas.2413449122

3. Thomas F Burns, Tatsuya Haga, Tomoki Fukai (2022) Multiscale and extended retrieval of associative memory structures in a cortical model of local-global inhibition balance. eNeuro, Vol. 9, No. 3, ENEURO.0023-22.2022. doi: 10.1523/ENEURO.0023-22.2022 URL: www.eneuro.org/content/9/3/ENEURO.0023-22.2022 

4. Tatsuya Haga, Tomoki Fukai (2021) Multiscale representations of community structures in attractor neural networks. PLOS Computational Biology, Vol. 17, No. 8, e1009296. doi: 10.1371/journal.pcbi.1009296 URL: journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1009296 

5. Tatsuya Haga, Tomoki Fukai (2019) Extended temporal association memory by modulations of inhibitory circuits. Physical Review Letters, Vol. 123, Issue 7, eid 078101. doi: 10.1103/PhysRevLett.123.078101 URL: journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.078101 

6. Keita Watanabe, Tatsuya Haga, Masami Tatsuno, David Euston, Tomoki Fukai　(2019) Unsupervised detection of cell-assembly sequences by similarity-based clustering. Frontiers in Neuroinformatics. doi: 10.3389/fninf.2019.00039 URL: www.frontiersin.org/journals/neuroinformatics/articles/10.3389/fninf.2019.00039/full 

7. Tomoki Kurikawa, Tatsuya Haga, Takashi Handa, Rie Harukuni, Tomoki Fukai (2018) Individual Differences In Perceptual Decision Making Reflect Neural Variability In Medial Frontal Cortex. Nature Neuroscience, Vol. 21, Issue 12, 1764–1773. doi: 10.1038/s41593-018-0263-5 URL: www.nature.com/articles/s41593-018-0263-5 

8. Tatsuya Haga, Tomoki Fukai (2018) Dendritic processing of spontaneous neuronal sequences for single-trial learning. Scientific Reports, Vol. 8, 15166. doi: 10.1038/s41598-018-33513-9 URL: www.nature.com/articles/s41598-018-33513-9 

9. Tatsuya Haga, Tomoki Fukai (2018) Recurrent network model for learning goal-directed sequences through reverse replay. eLife, Vol. 7, e34171.  doi: 10.7554/eLife.34171 URL: elifesciences.org/articles/34171 

10. Yohei Kondo, Yuichiro Yada, Tatsuya Haga, Yuzo Takayama, Takuya Isomura, Yasuhiko Jimbo, Osamu Fukayama, Kunihiko Mabuchi (2017) Temporal relation between neural activity and neurite pruning on a numerical model and a microchannel device with micro electrode array. Biochemical and Biophysical Research Communications, Vol. 486, Issue 2, pp. 539–544. doi: 10.1016/j.bbrc.2017.03.082 URL: www.sciencedirect.com/science/article/abs/pii/S0006291X1730548X?via%3Dihub 

11. Yuichiro Yada, Tatsuya Haga, Hiroki Miyazako, Yuzo Takayama, Osamu Fukayama, Takayuki Hoshino and Kunihiko Mabuchi (2014) Using Simulations to Evaluate Input-Site and Tetanized-Site Specificity of Tetanic Effect on Neuronal Networks. Electronics and Communications in Japan, Vol. 97, Issue 8, pp. 72–80. doi: 10.1002/ecj.11673 URL: onlinelibrary.wiley.com/doi/10.1002/ecj.11673 

12. Tatsuya Haga, Osamu Fukayama, Yuzo Takayama, Takayuki Hoshino, Kunihiko Mabuchi (2013) Efficient Sequential Bayesian Inference Method for Real-time Detection and Sorting of Overlapped Neural Spikes. Journal of Neuroscience Methods, Vol. 219, Issue 1, pp. 92-103. doi: 10.1016/j.jneumeth.2013.06.009 URL: www.sciencedirect.com/science/article/abs/pii/S0165027013002264 

13. Leo Miyashita, Yuzo Takayama, Tatsuya Haga, Takafumi Suzuki, Kunihiko Mabuchi (2013) Effects of Electric Field Stimulation Timing on Calcium Dynamics of Cultured Cardiomyocytes. IEEJ Transactions on Electrical and Electronic Engineering, Vol. 8, No. S1. doi: 10.1002/tee.21927 URL: onlinelibrary.wiley.com/doi/10.1002/tee.21927 

14. Yuzo Takayama, Naoki Kotake, Tatsuya Haga, Takafumi Suzuki, Kunihiko Mabuchi (2011) Formation of one-way-structured cultured neuronal networks inmicrofluidic devices combining with micropatterning techniques. Journal of Bioscience and Bioengineering, Vol. 114, Issue 1, pp. 92–95. doi: 10.1016/j.jbiosc.2012.02.011 URL: www.sciencedirect.com/science/article/abs/pii/S1389172312000722 

Review Articles 総説論文

1. Tomoki Fukai, Toshitake Asabuki, Tatsuya Haga (2021) Neural mechanisms for learning hierarchical structures of information, Current Opinion in Neurobiology, Vol. 70, pp. 145-153. doi: 10.1016/j.conb.2021.10.011 URL: www.sciencedirect.com/science/article/abs/pii/S0959438821001252 

Refereed Conference Proceedings 査読付き国際会議発表

1. Tatsuya Haga, Tomoki Fukai (2020) Multiscale associative memory recall by modulation of inhibitory circuits. Computational and Systems Neuroscience (Cosyne), Denver, USA. [Poster]

2. Tatsuya Haga, Tomoki Fukai (2016) Apical dendrite as a canonical correlation analyzer. Computational and Systems Neuroscience (Cosyne), Salt Lake, USA. [Poster]

3. Tatsuya Haga, Yuzo Takayama, Kunihiko Mabuchi (2013) Estimation of Templates and Timings of Spikes in Extracellular Voltage Signals Containing Overlaps of the Arbitrary Number of Spikes. 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Osaka, Japan. [Poster] URL: ieeexplore.ieee.org/document/6609920 

4. Yuzo Takayama, Naoki Kotake, Tatsuya Haga, Takafumi Suzuki, Kunihiko Mabuchi (2011) Microfabrication- and microfluidics-based patterning of cultured neuronal network. 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Boston, USA. [Poster] URL: ieeexplore.ieee.org/document/6090606 

Funding 研究費

October 2025 – March 2029 JST PRESTO “Modeling and application of internal thought process of the brain”

October 2023 – March 2029 JST CREST “Functional analyses of the sleeping brain driven by multi-layered neural activity data” (Research Director: Kaoru Inokuchi)

April 2021 – March 2025 JSPS KAKENHI Grant-in-Aid for Early-Career Scientists “Modeling neural language processing by attractor networks”

April 2013 - March 2015 Grants-in-Aid for JSPS Fellows of Japan Society for the Promotion of Science

2025年度―2028年度（予定）さきがけ「脳における内的思考プロセス生成のモデル化と応用」

2023年度―2028年度(予定)　CREST「多階層の神経活動データ駆動による睡眠脳の機能解明」（主たる共同研究者として、研究代表者：井ノ口馨）

2021年度–2024年度　科研費（若手研究） 「アトラクターネットワークによる言語処理の神経メカニズムのモデル化」

2013年度–2015年度　科研費（特別研究員奨励費）

Links リンク

Google Scholar: https://scholar.google.co.jp/citations?user=LU-LnVAAAAAJ&hl=en

ResearchGate: https://www.researchgate.net/profile/Tatsuya_Haga3

Loop: https://loop.frontiersin.org/people/614662/overview

Github: https://github.com/TatsuyaHaga

NICT (National Institute of Information and Communications Technology): https://www.nict.go.jp/

CiNet (Center for Information and Neural networks): https://cinet.jp/english/