社会経済的状況を反映した脳全体の関連パターンの分析
Scott Marek1,2,3,4,5, Meghan Rose Donohue4, Nicole Karcher4
1Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.
bioRxiv : the preprint server for biology
|December 22, 2025
まとめ
社会経済的地位(SES)は、IQよりも脳の構造と機能に大きな影響を与えます。脳とSESの関連は、IQと脳の関連とは異なり、多様な集団において堅牢です。
科学分野:
- 神経科学
- 遺伝学
- 心理学
背景:
- 以前の脳全体関連研究(BWAS)は、主にIQや精神病理学などの行動特性と脳のバリエーションを関連付けていました。
- これらの関連の解釈可能性と一般化可能性は限られていました。
研究 の 目的:
- 649の変数を脳機能と構造にマッピングするためにBWASを拡張すること。
- 既存の脳データタイプと比較してBWASマップをアノテーション強化すること。
- 集団レベルの脳のバリエーションの主なドライバーを特定すること。
主な方法:
- 小児脳認知発達(ABCD)研究データセットを利用しました。
- 649の変数を脳の構造と機能にマッピングしました。
- 結果のBWASマップを既存の神経画像およびエクスポソームデータと比較しました。
主要な成果:
- SESは、安静時機能的結合(RSFC)および皮質厚との関連が最も強いことが示されました。
- 感覚および運動皮質に関連する主要なエクスポソーム脳パターンは、BWASマップの分散の34%を説明しました。
- SESを調整すると、脳とIQの関連が40%減少し、これらの関連は高SESサブサンプルでは一般化しませんでした。
結論:
- SESは、IQおよび精神病理学を上回る、集団レベルの脳のバリエーションの主要な軸です。
- 脳とSESの関連は、脳とIQの関連とは異なり、堅牢で一般化可能です。
- SESは、ストレスや睡眠不足などの要因を通じて、脳の構造と機能に間接的に影響を与える可能性があります。
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