Study for the sound localization maps and neural circuit functionin the chicken.

• Project/Area Number: 22700413
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Neurophysiology and muscle physiology
• Research Institution: Kyoto University
• Principal Investigator: FUKUI Iwao 京都大学, 医学研究科, 准教授 (90362532)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: ニューロン / シナプス / 神経回路 / 音源定位 / 音源地図

Research Abstract

We analyzed how to calculate the interaural time difference that is one of the important key for the sound localization. The interaural time difference is calculated by the bilateral projection from the nucleus magnocellularis that is inhibited by the superior olivary nucleus. We studied using in vivo recording and some drugs and found that the superior nucleus sharpens the sound frequency response in the magnocellularis. We also found that the mutual inhibition between superior nucleus balance the activity bilateral nucleus magnocellularis. These findings are considered to be important for the calculation of the sound localization.

Research Products

• [Journal Article] Inhibition in the balance : binaurally coupled inhibitory feedback in sound localization circuitry (2011)
  • Author(s): Burger RM, Fukui I, Ohmori H, Rubel EW
  • Journal Title: Journal of Neurophysiology Volume: 106 Pages: 4-14
  • Peer Reviewed
• [Journal Article] GABAergic inhibition sharpens the frequency tuning and enhances phase locking in chicken nucleus magnocellularis neurons. (2010)
  • Author(s): Iwao Fukui, R. Michael Burger, Harunori Ohmori, and Edwin Rubel.
  • Journal Title: J Neuroscience Volume: 30(36) Issue: 36 Pages: 12075-12083
  • DOI: 10.1523/jneurosci.1484-10.2010
  • Peer Reviewed
• [Journal Article] GABAergic inhibition sharpens the frequency tuning and enhances phase locking in chicken nucleus magnocellularis neurons (2010)
  • Author(s): Fukui I, Burger RM, Ohmori H, Rubel EW
  • Journal Title: The Journal of neuroscience Volume: 30 Pages: 12075-12083
  • Peer Reviewed
• [Presentation] ニワトリ下丘の音源地図～時間差情報と音圧差情報 (2012)
  • Author(s): 福井巌・大森治紀
  • Organizer: 第89回日本生理学会
  • Place of Presentation: 長野県松本市
  • Year and Date: 2012-03-29
• [Presentation] Sound localization map in inferior colliculus of chicken (2012)
  • Author(s): I. Fukui, H. Ohmori
  • Organizer: The 89th annual meeting of the physiological society of Japan
  • Place of Presentation: Yokohama
• [Presentation] ニワトリ下丘の音源地図～時間差情報と音圧差情報 (2011)
  • Author(s): 福井巌・大森治紀
  • Organizer: 第34回神経科学学会
  • Place of Presentation: 横浜
  • Year and Date: 2011-09-15
• [Presentation] Sound localization map in inferior colliculus of chicken (2011)
  • Author(s): I. Fukui, H. Ohmori
  • Organizer: The 34th annual meeting of the Japan neuroscience society
  • Place of Presentation: Yokohama
• [Presentation] Neural network of the sound localization using characteristic frequency difference (2011)
  • Author(s): I. Fukui, H. Ohmori
  • Organizer: The 88th annual meeting of the physiological society of Japan
  • Place of Presentation: Yokohama
• [Presentation] 特徴周波数差を利用した音源定位の神経回路機構 (2010)
  • Author(s): 福井巌・大森治紀
  • Organizer: 第33回日本神経科学大会
  • Place of Presentation: 神戸コンベンションセンター
  • Year and Date: 2010-09-03
• [Presentation] Effects of cochlear delay in the ITD processing in NL (2010)
  • Author(s): I. Fukui, H. Ohmori
  • Organizer: Neuroscience 2010, SfN's 40th annual meeting
  • Place of Presentation: San Diego(USA)
• [Presentation] Neural network of the sound source localization using characteristic frequency difference (2010)
  • Author(s): I. Fukui, H. Ohmori
  • Organizer: Neuro2010 The 33th annual meeting of the Japan neuroscience society
  • Place of Presentation: Kobe
• [Book] 音源定位の神経路機構Clinical Neuroscience (2011)
  • Author(s): 福井巌、大森治紀
  • Publisher: 中外医学社
• [Book] 音源定位の神経路機構Clinical Neuroscience vol.29 No.12 (2011)
  • Author(s): 福井巌・大森治紀
  • Total Pages: 4
  • Publisher: 中外医学社
• [Remarks]
  • URL: http://www.nbiol.med.kyoto-u.ac.jp/