Presentation | 2002/3/11 Contextual modulation of population coding and oscillatory input Narihisa MATSUMOT, Masato OKADA, Kenji DOYA, Mitsuo KAWATO, |
---|---|
PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Perception of physical quantities, i.e., form, brightness and color, and the responses of V1 neurons can be influenced by a context surrounding the target. This is called "contextual modulation". We discuss both the diffusion process of representation of physical quantities and the control mechanism of this diffusion by using two hypercolumn (HC) model underlying population coding. Two line segments with different angles are injected to the two HCs, which are connected each other by excitatory connections. Then the difference of the angles represented on the HCs is smaller than that of the angles of the lines by the stability of a local excitation. Next, additional oscillatory inputs inject to each HC to gate the diffusion. We found the angle difference represented on the HCs in the in-phase case is smaller than in the anti-phase case. This means that the phase difference of two pieces of oscillatory input serves as the flag which controls the interaction between the HCs. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | population coding / hypercolumn / oscillatory input / contextual modulation |
Paper # | NC2001-138 |
Date of Issue |
Conference Information | |
Committee | NC |
---|---|
Conference Date | 2002/3/11(1days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | |
Chair | |
Vice Chair | |
Secretary | |
Assistant |
Paper Information | |
Registration To | Neurocomputing (NC) |
---|---|
Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Contextual modulation of population coding and oscillatory input |
Sub Title (in English) | |
Keyword(1) | population coding |
Keyword(2) | hypercolumn |
Keyword(3) | oscillatory input |
Keyword(4) | contextual modulation |
1st Author's Name | Narihisa MATSUMOT |
1st Author's Affiliation | Graduate School of Science and Engineering, Saitama University:RIKEN Brain Science Institute() |
2nd Author's Name | Masato OKADA |
2nd Author's Affiliation | RIKEN Brain Science Institute |
3rd Author's Name | Kenji DOYA |
3rd Author's Affiliation | ATR Human Information Science Laboratories:CREST, Japan Science Techonology corporation |
4th Author's Name | Mitsuo KAWATO |
4th Author's Affiliation | ATR Human Information Science Laboratories |
Date | 2002/3/11 |
Paper # | NC2001-138 |
Volume (vol) | vol.101 |
Number (no) | 735 |
Page | pp.pp.- |
#Pages | 8 |
Date of Issue |