Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Syozo Yasui"'
Autor:
Hakaru Tamukoh, Kiyohisa Natsume, Kazuhiro Tokunaga, Kazuo Ishii, Tetsuo Furukawa, Syozo Yasui, Masumi Ishikawa, Keiichi Horio
Publikováno v:
International Congress Series. 1301:43-47
This paper reports on novel developments brought by combining the self-organizing map (SOM) with a modular network. This is called modular network SOM (mnSOM). The mnSOM has an arrayed structure of functional modules aligned on a lattice, and the arc
Publikováno v:
Proceedings of International Joint Conference on Neural Networks. 3:1581-1586
Kohonen's Self-Organizing Map (SOM), which performs topology-preserving transformation from a highdimensional data vector space to a low-dimensional map space, provides a powerful tool for data analysis, classification and visualization in many appli
Publikováno v:
The Brain & Neural Networks. 12:39-51
The modular network SOM (mnSOM) proposed in this paper is a Self-Organizing Map (SOM) in function space, as opposed to the conventional SOM in vector space. Whereas each node of the conventional SOM represents a codebook vector, each unit of mnSOM re
Publikováno v:
The Journal of General Physiology
The speed of signal conduction is a factor determining the temporal properties of individual neurons and neuronal networks. We observed very different conduction velocities within the receptive field of fast-type On-Off transient amacrine cells in ca
Publikováno v:
Experimental Brain Research. 147:296-304
In carp retina, the receptive field size of the H1-type horizontal cell (HC) network is known to be chromatically selective, as electrophysiological signals are generated by short-wavelength (SW) light stimuli, which spread much less than those for l
Autor:
Mustafa B.A. Djamgoz, Scott P. Fraser, Hajime Hirasawa, Masahiro Yamada, Kazuhiko Katano, Tetsuo Furukawa, Syozo Yasui
Publikováno v:
Neuroscience Research. 35:309-319
The spectral characteristics of cone-driven horizontal cells of H1 subtype (H1 HCs) receiving main synaptic input from red-sensitive cones were studied in light- and dark-adapted retinae of carp. The spectral sensitivity profile of H1 HCs in dark-ada
Publikováno v:
Electrochimica Acta. 44:3809-3820
A novel voltammetric method using a new carbon electrode has been developed for simultaneous measurement of any combination of nitrite ion (NO−2), dopamine (DA) and serotonin (5-HT) with ascorbic acid (AA). Both cyclic voltammetry (CV) and differen
Publikováno v:
Neuroscience Research. 31:189-199
This study is concerned with regulation of the intracellular Ca 2+ concentration ([Ca 2+ ] i ) of horizontal cells isolated from cyprinid fish retinae, with the main emphasis on the role of the Na + -Ca 2+ exchanger. An inward current was blocked by
Autor:
Syozo Yasui
Publikováno v:
The Brain & Neural Networks. 1:39-42
The recent discovery of nitric oxide (NO) as an intercellular messenger has brought about surprizing impacts in many branches of medicine and life science. This article reviews such developments in neuroscience where the simple gas molecule acts as a
Publikováno v:
Proceedings of 1993 International Conference on Neural Networks (IJCNN-93-Nagoya, Japan).
Horizontal cells (HCs), second-order retinal neurons, form a layer of network via gap junctions and the lateral signal transmission within this HC system can be modelled by a 2-dimensional cable theory. It is well known that a dopamine-releasing feed