臭い空間の皮質表現の構造と柔軟性

Stan L Pashkovski¹, Giuliano Iurilli^1,2, David Brann¹

¹Department of Neurobiology, Harvard Medical School, Boston, MA, USA.

Nature

|July 3, 2020

まとめ

脳について

科学分野:

神経科学
嗅覚系の研究
感覚処理

背景:

皮質は差別と一般化のために感覚情報を整理します
嗅覚皮質が匂い同士の化学的関係をどうコード化して感知的なカテゴリーを形成するかは不明です
嗅覚皮質における化学的匂い空間の体系的な表現は,まだ記述されていません.

研究の目的:

嗅覚皮質が化学物質の匂いをどう表現するかを調べるため
ピリフォームド皮質と嗅覚球の匂いのコードを比較する
から皮質への変換とその可塑性を理解するためです

主な方法:

化学情報分析
マウスのマルチフォトンイメージング
神経活動パターンの分析

主要な成果:

ピリフォームド皮質とオルファクトリー・バルブの両方が,相関する活動パターンによる化学的匂いの関係を表しています.
皮質の匂いのコードは,球体のコードよりも強い匂いを集約する.
嗅覚皮質は化学物質の匂いの空間を構造的に表現し関連性を強調し認識に合致します

結論:

嗅覚皮質は化学物質の匂いの空間を構造的に表現し匂いの関係を強調します
この皮質表現は個体間では似ていますがプラスチックのままです
嗅覚システムは共通で個別化された感覚に関連した匂いのシグナルを割り当てることができます

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