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Experience-dependent odor representations in the Drosophila mushroom body

Research Project

Project/Area Number 25430026
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurophysiology / General neuroscience
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

ENDO Keita  国立研究開発法人理化学研究所, 脳科学総合研究センター, 研究員 (40425616)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords感覚情報処理 / 嗅覚 / 脳内表現 / 弁別 / カテゴリ分類 / キノコ体 / ショウジョウバエ / カルシウムイメージング / キイロショウジョウバエ / mushroom body / 神経表現 / カテゴリ化 / 知覚
Outline of Final Research Achievements

To understand the circuit mechanisms of the olfactory system to generate odor perception, I conducted the functional calcium imaging of the intrinsic neurons in the secondary olfactory center, the mushroom body (MB) in the Drosophila brain, and compared the data with those in the primary olfactory center, the antennal lobe (AL). I found that many odorants were represented more independently in the MB, conferring downstream neurons more discriminability. In addition, many sets of odorants were also represented more independently from other odorants in the MB, allowing the downstream neurons to categorize those sets of odorants more accurately. Together, these results suggest that the MB extracts various odor features and represent them independently, allowing animals to perceive as many odorants in the nature as possible.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (2 results)

All 2015 2014

All Presentation (2 results) (of which Invited: 1 results)

  • [Presentation] Categorization of olfactory information in the Drosophila mushroom body2015

    • Author(s)
      Keita Endo, Yoshiko Tsuchimoto, Hokto Kazama
    • Organizer
      第38回 日本神経科学大会
    • Place of Presentation
      神戸国際展示場・神戸市・兵庫県
    • Year and Date
      2015-07-29
    • Related Report
      2015 Annual Research Report
  • [Presentation] キイロショウジョウバエの嗅覚連合学習に関わるキノコ体における匂い情報コーディング2014

    • Author(s)
      遠藤啓太
    • Organizer
      神戸大学 大学院理学研究科後期課程 生命情報伝達特論II
    • Place of Presentation
      神戸大学大学院理学研究科(兵庫県)
    • Related Report
      2013 Research-status Report
    • Invited

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Published: 2014-07-25   Modified: 2019-07-29  

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