Presentation	1998/3/19 A Coupling Conductance Value of Gap Junctions Between Retinal Bipolar Cells Estimated by Using Compartmental Models Hiroshi Yamamoto, Osamu Umino,
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Abstract(in English)	We estimated a coupling conductance value of gap junction between bipolar cells by simulating compartmental models of cone-bipolar cell network. The light and electron-microscopic measurements were incorporated into the model. Cone-BC network model was a 5×8 array of BCs and a ≈ 25×32 array of cones. When membrane resistance (R_m)=30, 000Ωcm^<-2>, input resistance (R_) of a single bipolar cell model was of about 1.13GΩ, a value within the range of physiological R_(1-3GΩ). When a coupling resistance (R_c)=100MΩ, R_ was of about 160MΩ, a value within the range of physiological R_(63-300MΩ). Receptive field simulations showed that the R_c value of 100MΩ yields a length constant value of 170μm, a value within the range of reported length constant values from electrophysiological experiments.
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Keyword(in English)	retina / bipolar cell / gap junction / coupling conductance / compartmental model
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Conference Information
Committee	MBE
Conference Date	1998/3/19(1days)
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Paper Information
Registration To	ME and Bio Cybernetics (MBE)
Language	JPN
Title (in Japanese)	(See Japanese page)
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Title (in English)	A Coupling Conductance Value of Gap Junctions Between Retinal Bipolar Cells Estimated by Using Compartmental Models
Sub Title (in English)
Keyword(1)	retina
Keyword(2)	bipolar cell
Keyword(3)	gap junction
Keyword(4)	coupling conductance
Keyword(5)	compartmental model
1st Author's Name	Hiroshi Yamamoto
1st Author's Affiliation	Dept.Information Sciences, Toho University()
2nd Author's Name	Osamu Umino
2nd Author's Affiliation	Dept.Information Sciences, Toho University
Date	1998/3/19
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Volume (vol)	vol.97
Number (no)	621
Page	pp.pp.-
#Pages	8
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