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関連する概念動画

Hindsight Biases01:12

Hindsight Biases

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Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now? 
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Understanding Deception01:14

Understanding Deception

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Deception is a pervasive aspect of human communication. Empirical studies have shown that most individuals engage in some form of deceit on a daily basis, with approximately 20% of social exchanges involving deceptive elements. Lying follows a developmental trajectory, peaking during adolescence and declining with age, possibly due to the maturation of cognitive control and social accountability.Cognitive and Social Factors in Deception DetectionDespite its prevalence, accurately detecting...
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Perceptual Constancy01:12

Perceptual Constancy

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
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Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
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The Availability Heuristic01:08

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A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):
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Impression Management Techniques I: Managing Appearances01:29

Impression Management Techniques I: Managing Appearances

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Appearance is a multidimensional aspect of self-presentation that encompasses observable attributes such as clothing, grooming, speech, and nonverbal behavior. These elements are often strategically managed to align with socially constructed expectations in different settings. For instance, individuals tailor their appearance during job interviews, social gatherings, or athletic events to meet the perceived norms of those environments.Contextual Adaptation and Social SignalsThe research...
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cAAVe 現象 外見に気をつけろ!

Filippo Calzolari1, Benedikt Berninger2

  • 1Institute of Physiological Chemistry, University Medical Center Mainz, 55128 Mainz, Germany.

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PubMed
まとめ

遺伝子組み換えアデノ関連ウイルス (AAV) は,神経細胞に予期せぬ活性を示します. この発見は 細胞から神経への変換に 依存する現在の脳修復戦略に 挑戦しています

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科学分野:

  • 神経科学
  • 分子生物学
  • 再生医療

背景:

  • アデノ関連ウイルス (AAV) は広く使用されている遺伝子配送ベクターである.
  • AAVはしばしば細胞特異的な発現のために設計され,例えば,膠質細胞を標的とする.
  • 神経細胞への変換は 脳の修復のための有望な戦略です

研究 の 目的:

  • グリア特異的ターゲティングのために設計されたAAVのインビボ発現パターンを調査する.
  • これらのAAVが内生ニューロンの非標的発現を示すかどうかを決定する.
  • グリアからニューロンへの変換の研究における,そのような非標的発現の影響を評価する.

主な方法:

  • グリア特異のプロモーターのために設計された遺伝子工学によるAAVベクターを使用した.
  • モデルシステムにAAVを vivoで投与した.
  • 詳細な組織学的および分子分析を行って,膠質細胞と神経細胞の両方でウイルスの発現を検出しました.

主要な成果:

  • 内生ニューロンにおけるAAVの有意かつ広範な発現が観察され,意図された膠質特異的標的化とは対照的である.
  • ニューロン集団で活性化することが示された.
  • この予期せぬ神経活動に寄与する 潜在的メカニズムを特定した.

結論:

  • 現在の膠質特異性AAVベクターは,膠質への発現を確実に制限することができない.
  • エンジニアリングされたAAVの観察されたニューロンの活動は,グリアからニューロンへの変換に関する研究を混乱させる可能性があります.
  • 研究者は注意を払い,脳修復用のニューロン集団におけるAAV発現プロフィールを検証する必要があります.