| 1.Research Institution | Tamagawa University | |
| 2.Research Area | Integrated Fields | |
| 3.Research Field | Information on Life Systems | |
| 4.Term of Project | FY1996〜FY2000 | |
| 5.Project Number | 96I00104 | |
| 6.Title of Project | Self-organization of Informational Representation and Learnable Neurotips |
| Name | Institution,Department | Title of Position |
| Minoru Tsukada | Tamagawa University, Brain Science Research Center / Faculty of Engineering | Professor |
8.Core Members
| Names | Institution,Department | Title of Position |
| Hideaki Saito | Tamagawa University, Brain Science Research Center / Faculty of Engineering | Professor |
| Nozomu Hoshimiya | Tohoku University / Graduate school of Engineering | Professor |
| Kazuyuki Aihara | Tokyo University / Graduate School of Frontier Sciences | Professor |
9.Cooperating Researchers
| Names | Institution,Department | Title of Position |
| Ryoukou Futami | Tohoku University / Graduate school of Engineering | Assistant Professor |
| Yoshihiko Horio | Tokyo Denki University / Faculty of Engineering | Assistant Professor |
| Ichiro Tsuda | Hokkaido University / Graduate school of Science | Professor |
10.Summary of Research Results
|
The episodic memory system is classified into the two subsystems according to the span of memory time; short-term memory (hippocampus) and long-term memory (association cortices). Dynamic interactions between the two subsystems play an important role in storing and retrieving memory contents. Based on the physiological experiments of the LTP/LTD in the hippocampal neural networks and the hippocampal-auditory cortical interaction in guinea pig, we proposed a model of hippocampal-cortical memory system and implemented it in learnable neurotips. The model algorithms are the following ; 1). A spatio-temporal learning rule which consistently interpreted the experimental results of LTP/LTD in the hippocampus was used to make a context (global information) from spatial and temporal events (local information). 2). The local-global information worked as an index (addressor) in storing and retrieving long-term memory contents. 3). A dynamic cell assembly formed by the time-coincidence played an important role in the memory storing and retrieving processes. |
11.Key Words
(1)Memory、(2)Learning、(3)Hippocampal-cortical Memory System
(4)Dynamical Information Representation、(5)Spatio-Temporal Learning Rule、(6)Contextual addressing
(7)Dynamical Cell Assembly
12.References
| Author | Title of Article | |||
| Hironori Matsuda, Takeshi Aihara, Masami Tatsuno, Minoru Tsukada and Kazuyuki Aihara | Chaotic stimulus dependent long-term potentiation in the hippocampal CAI area | |||
| Journal | Volume | Year | Pages Concerned | |
| Biosystems | 58 | 2000 | pp.273-279 | |
| Author | Title of Article | |||
| Takeshi Aihara, Minoru Tsukada and Hironori Matsuda | Two dynamic processes for the induction of long-term potentiation in hippocampal CAI area | |||
| Journal | Volume | Year | Pages Concerned | |
| Biological Cybernetics | 82 | 2000 | pp.189-195 | |
| Author | Title of Article | |||
| Susumu Takahashi, Yuki Kobayashi, Takeshi Aihara, Minoru Tsukada, Yuichiro Anzai | Blind Separation of Neuronal Activities from Optical Imaging Data | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | 8 | 2000 | pp.3-12 | |
| Author | Title of Article | |||
| Yuki Kobayashi, Hideaki Shimazaki Takeshi Aihara, Minoru Tsukada | Spatial distributions of hippocampal LTP/LTD induced electrically from schaffer collaterals and stratum oriens with relative timing | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | In press | |||
| Author | Title of Article | |||
| Minoru Tsukada | Learning Rules in the Hippocampal Netwark and Their Efficiency Estimated Through the Model | |||
| Journal | Volume | Year | Pages Concerned | |
| Experimental Medicine | 18 | 2000 | pp.2673-2680 | |
| Author | Title of Article | |||
| Hironori Matsuda, Takeshi Aihara, Minoru Tsukada, Masami Tatsuno, Kazuyuki Aihara | Chaotic Stimulus Dependent Long-Term Potentiation(LTP) in the Hippocampal CA1 Area | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | 6 | 1999 | pp.117-127 | |
| Author | Title of Article | |||
| Jun Yamamoto, Muneyoshi Takahashi, Minoru Tsukada, Yuichiro Anzai | A New Multi-Unit Acquisition System for Free-Moving Animal Using Field Programmable Analog Array and on Chip MCU - Neuroscope 1 - | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | 6 | 1999 | pp.3-10 | |
| Author | Title of Article | |||
| Jun Yamamoto, Hiroyuki Monji, Mizuki Okanda, Minoru Tsukada, Hiroshi Sasaki, Koyu Fukunishi, Yuichiro Anzai | An Evoked Dynamic Interaction in the Guinea Pig Auditory Cortex by Compound Acoustic-Hippocampal Stimuli -An Optical Imaging Analysis | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | 6 | 1999 | pp.11-16 | |
| Author | Title of Article | |||
| Minoru Tsukada | Memorizing Mechanism | |||
| Journal | Volume | Year | Pages Concerned | |
| Computer Today | 84 | 1999 | pp.22-27 | |
| Author | Title of Article | |||
| Takeshi Aihara, Minoru . Tsukada Michael C. Crair, and Shigeru Sinomoto | Stimulus-Dependent Induction of Long-Term Potentiation in CAl Area of the Hippocampus ; Experiment and Model | |||
| Journal | Volume | Year | Pages Concerned | |
| Hippocampus | 7 | 1997 | pp.416-426 | |
| Author | Title of Article | |||
| Minoru Tsukada | Neural Network and Learning Rule | |||
| Journal | Volume | Year | Pages Concerned | |
| Development of Neural Research | 41 | 1997 | pp.843-854 | |
| Author | Title of Article | |||
| Minoru Tsukada, Takeshi Aihara, Hideaki Saito and Hiroshi Kato | Hippocampal LTP depends on spatial and temporal correlation of inputs | |||
| Journal | Volume | Year | Pages Concerned | |
| Neural Network | 9 | 1997 | pp.1357-1365 | |
| Author | Title of Article | |||
| Minoru Tsukada, Takeshi Aihara, Hideaki Saito, Hiroshi Kato, Michael C. Crair, and Shigeru Sinomoto | Spatio-temporal aspects of learning and memory in the hippocampal-cortical memory system | |||
| Journal | Volume | Year | Pages Concerned | |
| Biological Cybernetics | 1 | 1996 | pp.113-136 | |
| Author | Title of Article | |||
| Okamoto H., Kawakami, S., Saito, H., Hida, E., Odajima, K., Tamanoi, D., Ohno, H. | MT neurons in the macaque exhibited two types of bimodal direction tuning as predicted by a model for visual motion detection | |||
| Journal | Volume | Year | Pages Concerned | |
| Vision Research | 39 | 1999 | pp.3465-3479 | |
| Author | Title of Article | |||
| Adachi M. and Aihara K | Associative Dvnamics in a Chaotic Neural Network | |||
| Journal | Volume | Year | Pages Concerned | |
| Neural Networks | 10 | 1997 | pp.83-98 | |
| Author | Title of Article | |||
| Natsuhiro Ichinose, Kazuyuki Aihara, Yoichi Okabe | Correlation Codeing and Adaptation of Delays on Pulse Neural Networks | |||
| Journal | Volume | Year | Pages Concerned | |
| The Brain & Neural Networks | 4 | 1997 | pp.10-17 | |
| Author | Title of Article | |||
| Yosihiko Horio | Chaos Neural Computer | |||
| Journal | Volume | Year | Pages Concerned | |
| Computer Today | 14 | 1997 | pp.14-21 | |
| Author | Title of Article | |||
| Hirata Akihito, Hidetoshi Shimokawa, Kazuyuki Aihara | Entropy Function of Linear Map and Information Source Coding | |||
| Journal | Volume | Year | Pages Concerned | |
| The Transaction of the Institute of Electronics, Information and Communication Engineers D | 12 | 1999 | pp.1780-1792 | |
| Author | Title of Article | |||
| Shinichiro Kano, Takeshi Ito, Kunio Kazami, Akihiro Futami, Nozomu Hoshimiya | Examination of Mismatch Response for Difference of Tone Duration by EEG and MEG | |||
| Journal | Volume | Year | Pages Concerned | |
| ME and Biocybernetics | 35 | 1997 | pp.460-465 | |
| Author | Title of Article | |||
| Erdi P. and Tsuda I. | Hermeneutic approach to the brain | |||
| Journal | Volume | Year | Pages Concerned | |
| Theoria et historia scientiarum | In press | |||
| Author | Title of Article | |||
| Tsuda I. and Hatakeyama M. | Making sense of internal logic : Theory and case study | |||
| Journal | Volume | Year | Pages Concerned | |
| Science of interfaces | In press | |||
| Author | Title of Article | |||
| Tsuda I. and Kuroda S. | Cantor coding in the hippocampus | |||
| Journal | Volume | Year | Pages Concerned | |
| J. J. appl. math. | In press | |||
| Author | Title of Article | |||
| Tsuda I. | Towards an interpretation of dynamic neural activity in terms of chaotic dynamical systems | |||
| Journal | Volume | Year | Pages Concerned | |
| Behavioral and brain science | In press | |||
| Author | Title of Book | ||
| Hideaki Saitoh | Brain･Heart･Computer | ||
| Publisher | Year | Pages | |
| Maruzen | 1996 | 261 | |
| Author | Title of Book | ||
| Hideaki Saitoh | Visual Perception and Auditory Perception | ||
| Publisher | Year | Pages | |
| Ohmsha | 1999 | 275 | |
| Author | Title of Book | ||
| Aihara K | The Impact of chaos on science and society | ||
| Publisher | Year | Pages | |
| United Nations University Press | 1997 | 401 | |
| Author | Title of Book | ||
| Watanabe M, Aihara K and Kondo S | Control and Chaos | ||
| Publisher | Year | Pages | |
| Birkhauser, Boston | 1997 | 333 | |