Texture stereopsis through surround suppression in V1 neurons

• Project/Area Number: 24700325
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Neuroscience in general
• Research Institution: Osaka University
• Principal Investigator: SASAKI Kota 大阪大学, 生命機能研究科, 助教 (40467501)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 受容野 / 両眼立体視 / テクスチャ / 両眼視差 / 逆相関法 / １次視覚野 / 周辺抑制 / 側抑制 / 多点電極

Research Abstract

Depth can be perceived by a slight difference between the two retinal images. How do single neurons in the brain compute depth to contribute to stereoscopic perception?
It has been well understood that simple cells in primary visual cortex encode stereoscopic information by their structural difference in receptive fields between the two eyes. This study has revealed that similar neuronal mechanism can be used for texture stereopsis; some neurons in primary visual cortex had texture receptive fields whose structures were dissimilar between the two eyes. In addition, I found that some monocular neurons actually receive strong inhibitory inputs from the eye which does not elicit the responses. These cells may contribute to da Vinci stereopsis where stereoscopic perception arises because of no correspondence between the two eyes.

Research Products

• [Journal Article] 視覚質感に関わる特徴抽出 (2012)
  • Author(s): Ohzawa I, Tanaka H, Sasaki KS.
  • Journal Title: 生体の科学 Volume: 63(4) Pages: 276-283
  • URL: http://ej.islib.jp/ejournal/2425101298.html
• [Journal Article] 初期視覚野の神経生理 (2012)
  • Author(s): Ohzawa I, Sasaki KS.
  • Journal Title: Clin Neurosci Volume: 30(8) Pages: 874-878
  • URL: http://www.chugaiigaku.jp/item/detail.php?id=845
• [Presentation] Contrast response functions are identical at multiple spatiotemporal frequencies within single neurons in primary visual cortex (2013)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Soc. Neurosci.
  • Place of Presentation: San Diego, USA(Abstr. Program No. 359.14 (2013))
• [Presentation] V1 complex cells pool multiple disparity detectors tuned to different spatial frequencies. Soc (2013)
  • Author(s): Baba M, Sasaki KS, Ohzawa I.
  • Organizer: Neurosci.
  • Place of Presentation: San Diego, USA(Abstr. Program No. 161.17 (2013))
• [Presentation] Estimating invariant dimensions in V2 (2013)
  • Author(s): Hosoya H, Sasaki K, Ohzawa I.
  • Organizer: CNS2013
  • Place of Presentation: Paris, France
• [Presentation] Analysis of V1 disparity-selective neurons in the spatial frequency-phase difference domain (2013)
  • Author(s): Baba M, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013. P2-1-145 (2013)
  • Place of Presentation: Kyoto, Japan
• [Presentation] A degraded Gabor wavelet simulation for diagnoses of Posterior Cortical Atrophy (2013)
  • Author(s): Kato D, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013. P2-1-138 (2013)
  • Place of Presentation: Kyoto, Japan
• [Presentation] Sbspace mapping in Gabor wavelet domain (2013)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Neuro 2013. P2-1-137 (2013)
  • Place of Presentation: Kyoto, Japan
• [Presentation] Application of Gabor wavelet domain reverse correlation to visual neurons in macaque V2 (2013)
  • Author(s): Inagaki M, Sasaki KS, Hashimoto H, Ito M, Asakawa K, Ohzawa I.
  • Organizer: Neuro 2013. P2-1-130 (2013)
  • Place of Presentation: Kyoto, Japan
• [Presentation] Estimating invariant dimensions in V2 (2013)
  • Author(s): Hosoya H, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013. O1-6-6-3 (2013)
  • Place of Presentation: Kyoto, Japan
• [Presentation] マカカ属サル視覚皮質における両眼視差情報伝達様式-二光子励起イメージングによる検証の試み (2013)
  • Author(s): Takeuchi R, Ikezoe K, Sasaki KS, Saito Y, Fukazawa Y, Fujita I.
  • Organizer: 脳と心のメカニズム第13回冬のワークショップ. W14 (2013)
  • Place of Presentation: Rusutsu, Japan
• [Presentation] Analysis of V1 disparity-selective neurons in the spatial frequency-phase difference domain (2013)
  • Author(s): Baba M, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013
  • Place of Presentation: 京都
• [Presentation] A degraded Gabor wavelet simulation for diagnoses of Posterior Cortical Atrophy (2013)
  • Author(s): Kato D, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013
  • Place of Presentation: 京都
• [Presentation] Sbspace mapping in Gabor wavelet domain (2013)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Neuro 2013
  • Place of Presentation: 京都
• [Presentation] Application of Gabor wavelet domain reverse correlation to visual neurons in macaque V2 (2013)
  • Author(s): Inagaki M, Sasaki KS, Hashimoto H, Ito M, Asakawa K, Ohzawa I
  • Organizer: Neuro 2013
  • Place of Presentation: 京都
• [Presentation] Estimating invariant dimensions in V2 (2013)
  • Author(s): Hosoya H, Sasaki K, Ohzawa I.
  • Organizer: Neuro 2013
  • Place of Presentation: 京都
• [Presentation] Contrast response functions are identical at multiple spatiotemporal frequencies within single neurons in primary visual cortex (2013)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Neuroscience 2013
  • Place of Presentation: New Orleans, USA
• [Presentation] V1 complex cells pool multiple disparity detectors tuned to different spatial frequencies (2013)
  • Author(s): Baba M, Sasaki KS, Ohzawa I.
  • Organizer: Neuroscience 2013
  • Place of Presentation: New Orleans, USA
• [Presentation] Interocular comparisons of texture receptive fields of V1 neurons (2012)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Soc. Neurosci.
  • Place of Presentation: New Orleans, USA(Abstr. Program No. 570.09 (2012))
• [Presentation] Texture receptive field mapping using contrast-modulated gratings (2012)
  • Author(s): Sasaki KS, Ohzawa I.
  • Organizer: Neurosci. 2012.
  • Place of Presentation: Nagoya, Japan(P1-e25 (2012))
• [Presentation] コントラスト変調グレーティングによるテクスチャ受容野マッ ピング (2012)
  • Author(s): 佐々木耕太、大澤五住
  • Organizer: 第35回日本神経科学大会
  • Place of Presentation: 名古屋
• [Presentation] Interocular comparisons of texture receptive fields of V1 neurons (2012)
  • Author(s): Kota S Sasaki, Izumi Ohzawa
  • Organizer: Neuroscience 2012
  • Place of Presentation: New Orleans
• [Remarks]
  • URL: http://ohzawa-lab.bpe.es.osaka-u.ac.jp
• [Remarks] 大澤研究室
  • URL: http://ohzawa-lab.bpe.es.osaka-u.ac.jp