| 1.Research Institution | Keio University | |
| 2.Research Area | Integrated Fields | |
| 3.Research Field | Information for Life Systems | |
| 4.Term of Project | FY1996〜FY2000 | |
| 5.Project Number | 96I00102 | |
| 6.Title of Project | Study of Information Systems of Lives in Physical Model Complex Systems |
| Name | Institution,Department | Title of Position |
| Kiyoshi Kawamura | Faculty of Science and Technology | Professor |
8.Core Members
| Names | Institution,Department | Title of Position |
| Fumiko Yonezawa | Faculty of Science. & Tech., Keio Uni. | Professor |
| Kotaro Oka | Faculty of Science. & Tech., Keio Uni. | Associate Professor |
| Yukio Saito | Faculty of Science. & Tech., Keio Uni. | Professor |
9.Cooperating Researchers
| Names | Institution,Department | Title of Position |
| Hiroshi Takano | Faculty of Science. & Tech., Keio Uni. | Associate Professor |
| Sohei Gomi | Faculty of Hum. & Soc.Sci. Iwate Uni. | Assistant |
| Uishi Iwasaki | Faculty of Engineering, Ibaraki Uni. | Assistant |
10.Summary of Research Results
|
What we mention in our proposal were (1) To make physical models on a computer, which model neuronal and genetic systems of a real life, function as lives. (2) To represent various experimental results in digital form and to study the relation between the structure of the above mentioned physical models and their biological functioning (3) To propose algorithm and electric circuits which imitate those of real lives We have obtained the following results (1) As for the above items 1 and 2, we have constructed a database of anatomical data of synaptic connectivity of C. eslegans, which was not only used by ourselves but also supplied to other researchers. (2) As for the above item 1, we represented the synaptic connectivity in a directed graph and found paths of neuronal signals from sensory neurons to motor neurons used for native responses of the worm. This implies that the graph functions as a life mentioned in the above item 1. (3) As for above item 3, we have found a network of registers which replace synapses of C. elegans could process as much information as the worm. |
11.Key Words
(1)C. elegans、(2)Graph theory、(3)Neuronal network
(4)Native response、(5)Synaptic Connectivity、(6)Neurons
(7)Information Processing、(8)Electrical Circuit
12.References
| Author | Title of Article | |||
| Yasuhiro Funabashi et al. | Native Responses of C. elegans Encoded in Its Neuron Network | |||
| Journal | Volume | Year | Pages Concerned | |
| Journal of Physical Societies of Japan | 70 | 2001 | in press | |
| Author | Title of Article | |||
| Kiyoshi Kawamura et al. | Does a Randomly Organized Electrical Circuit Function as a Neuronal System ? | |||
| Journal | Volume | Year | Pages Concerned | |
| Japanies Journal of Applied Physics | 40 | 2001 | 2095〜2099 | |
| Author | Title of Article | |||
| Hiroto Ogawa et al. | Dendritic Calcium Accumulation Regulates Wind Sensitivity | |||
| Journal | Volume | Year | Pages Concerned | |
| Journal of Neurobiology | 46 | 2001 | 301〜303 | |
| Author | Title of Article | |||
| Hiroto Ogawa et al. | Dendritic Ca2+ Transient Increase Evoked by Wind Stimulus | |||
| Journal | Volume | Year | Pages Concerned | |
| Neuroscience Letters | 275 | 2000 | 61〜64 | |
| Author | Title of Article | |||
| Katsumi Hagita et al | Relaxation of Polymer Chain Confined in a Slit | |||
| Journal | Volume | Year | Pages Concerned | |
| Journal of the Physical Society of Japan | 68 | 1999 | 2144〜2145 | |
| Author | Title of Article | |||
| Satoru Morita | Scaling Law for the Lyapnov Spectra in Globally Coupled Tent Map | |||
| Journal | Volume | Year | Pages Concerned | |
| Physical Review E | 58 | 1998 | 4401〜4412 | |
| Author | Title of Article | |||
| Ken-ichi Oshio | Bifurcation and Chaos of Current Oscillations in Semiconductors | |||
| Journal | Volume | Year | Pages Concerned | |
| Journal of Physical Society of Japan | 67 | 1998 | 2538-2545 | |
| Author | Title of Article | |||
| Kotaro Oka et al. | Physiological Basis of Earthworm Ventrol Nerve Cord | |||
| Journal | Volume | Year | Pages Concerned | |
| Bioimages | 4 | 1996 | 149-156 | |