Presentation 2020-03-04
Spike synchrony and firing rates for Border Ownership selective neurons in a disinhibition network
Haruka Shimomura, Sou Nobukawa, Nobuhiko Wagatsuma,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Border Ownership (BO) tells which side of a contour owns a border, and it plays a fundamental role for the figure-ground segregation. Martin and von der Heydt have physiologically characterized attentional modulation on BO selective neurons for spike synchrony and firing rates. In order to understand the mechanisms of attentional modulation of responses on BO selective neuron, we propose a network model consisting of spiking neurons. To reproduce the observed physiological results, it was necessary to include two types of inhibitory neurons in our proposed model, SOM and VIP neurons, in addition to BO selective model neurons. Attention was mediated by the projection of VIP to SOM neurons, whereas visual inputs projected to both BO and SOM neurons. Simulations of the model indicated that attention decreased spike synchrony between pairs of BO model neurons, independent of the increase in their firing rates due to attention. These results suggested that the behavior of two types of inhibitory neurons underlie the attentional modulation during figure-ground segregation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Border-Ownership / Cortical Network Model / disinhibition / Visual Attention / Synchrony
Paper # NC2019-86
Date of Issue 2020-02-26 (NC)

Conference Information
Committee NC / MBE
Conference Date 2020/3/4(3days)
Place (in Japanese) (See Japanese page)
Place (in English) University of Electro Communications
Topics (in Japanese) (See Japanese page)
Topics (in English) Neuro Computing, Medical Engineering, etc.
Chair Hayaru Shouno(UEC) / Taishin Nomura(Osaka Univ.)
Vice Chair Kazuyuki Samejima(Tamagawa Univ) / Takashi Watanabe(Tohoku Univ.)
Secretary Kazuyuki Samejima(NAIST) / Takashi Watanabe(NTT)
Assistant Takashi Shinozaki(NICT) / Ken Takiyama(TUAT) / Yasuyuki Suzuki(Osaka Univ.) / Akihiro Karashima(Tohoku Inst. of Tech.)

Paper Information
Registration To Technical Committee on Neurocomputing / Technical Committee on ME and Bio Cybernetics
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Spike synchrony and firing rates for Border Ownership selective neurons in a disinhibition network
Sub Title (in English)
Keyword(1) Border-Ownership
Keyword(2) Cortical Network Model
Keyword(3) disinhibition
Keyword(4) Visual Attention
Keyword(5) Synchrony
1st Author's Name Haruka Shimomura
1st Author's Affiliation Toho University(Toho Univ)
2nd Author's Name Sou Nobukawa
2nd Author's Affiliation Chiba Institute of Technology(CIT)
3rd Author's Name Nobuhiko Wagatsuma
3rd Author's Affiliation Toho University(Toho Univ)
Date 2020-03-04
Paper # NC2019-86
Volume (vol) vol.119
Number (no) NC-453
Page pp.pp.61-64(NC),
#Pages 4
Date of Issue 2020-02-26 (NC)