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ポストコロナ状態におけるエピソード記憶障害とそのプロセス

Silvia Oliver-Mas1, Jordi A Matias-Guiu1, Cristina Delgado-Alonso1

  • 1Department of Neurology. Hospital Clínico San Carlos. San Carlos Health Research Institute (IdISCC), Universidad Complutense de Madrid, C/Profesor Martín Lagos, 28040, Madrid, Spain.

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まとめ

ポストコロナ状態（PCC）の患者は、符号化、学習、想起に影響を与える著しいエピソード記憶障害を示します。これらの記憶の問題は注意に関連し、主観的な訴えによって悪化します。

キーワード:
COVID-19認知ロングCOVID記憶神経心理学

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科学分野:

  • 神経科学
  • 認知心理学
  • 感染症研究

背景:

  • 認知機能障害、特にエピソード記憶障害は、ポストコロナ状態（PCC）の一般的な症状です。
  • 以前の研究ではエピソード記憶障害が強調されてきましたが、PCCにおける特定の記憶プロセスの包括的な評価は限られています。

研究 の 目的:

  • ポストコロナ状態と診断された患者における記憶機能を包括的に調査および特徴付けること。
  • PCC患者と健常対照群の間で記憶パフォーマンスを比較すること。
  • PCCにおけるエピソード記憶、その他の認知機能、および主観的な記憶の訴えとの相関関係を探ること。

主な方法:

  • 157人のPCC患者と74人の健常対照群を含む横断研究が実施されました。
  • 参加者は、Loewenstein-Acevedo Scale for Semantic Interference and Learning (LASSI-L)、Free and Cued Selective Reminding test (FCSRT)、およびOpen-Trial Selective Reminding Test (OT-SRT)を含む詳細な神経心理学的評価を受けました。
  • 統計分析により、群間のパフォーマンスを比較し、記憶スコアと様々な認知および臨床評価との相関関係を調査しました。

主要な成果:

  • PCC患者は、対照群と比較して、LASSI-L、FCSRT、OT-SRTで有意に低いパフォーマンスを示しました。
  • 記憶パフォーマンスは、注意とは中程度の正の相関を示し、言語、視空間、実行機能とは低い正の相関を示しました。
  • 主観的な記憶の訴えは、記憶パフォーマンスの低下と関連しており、LASSI-Lがこれらの訴えと最も関連していましたが、OT-SRTは注意の影響を最も受けませんでした。

結論:

  • ポストコロナ状態は、初期の符号化、学習、獲得、貯蔵、および想起に影響を与える、広範なエピソード記憶障害と関連しています。
  • PCCにおける記憶障害は、意味干渉に対する感受性と、手がかりや認識による部分的な改善のみを特徴としています。
  • これらの発見は、PCC患者における特定の記憶障害に対処するための標的介入の必要性を強調しています。