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Aggression01:47

Aggression

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Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for...
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Diencephalon: Hypothalamus and Coordination01:23

Diencephalon: Hypothalamus and Coordination

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The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
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Diencephalon: Anatomical Regions01:30

Diencephalon: Anatomical Regions

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The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
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Regulation of Food Intake01:30

Regulation of Food Intake

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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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Diencephalon: Thalamus and Information Relay01:27

Diencephalon: Thalamus and Information Relay

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The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is  a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
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関連する実験動画

Updated: Aug 9, 2025

Author Spotlight: Hypothalamic Neural Mechanism Insights
09:29

Author Spotlight: Hypothalamic Neural Mechanism Insights

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攻撃性を反映する下垂体ニューロン

Taehong Yang1, Daniel W Bayless1, Yichao Wei1

  • 1Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA.

Cell
|February 16, 2023
PubMed
まとめ
この要約は機械生成です。

研究者はマウスの視床下部に 攻撃性を反映するニューロンを発見しました これらのニューロンは 戦闘行動に不可欠で 活性化すると 攻撃性を引き起こすことができ 皮質下での社会的相互作用の 基盤を明らかにします

キーワード:
フォストラップトラップ2VMVl について攻撃性認知能力感情ファイバーフォトメトリーミニスクープミラーニューロン社会的行動社会的認知尾の鳴き声ベントロメディアル・ヒポタラムス

さらに関連する動画

Hypothalamic Kisspeptin Neurons as a Target for Whole-Cell Patch-Clamp Recordings
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Hypothalamic Kisspeptin Neurons as a Target for Whole-Cell Patch-Clamp Recordings

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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

Published on: July 4, 2013

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関連する実験動画

Last Updated: Aug 9, 2025

Author Spotlight: Hypothalamic Neural Mechanism Insights
09:29

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Hypothalamic Kisspeptin Neurons as a Target for Whole-Cell Patch-Clamp Recordings
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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

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科学分野:

  • 神経科学
  • 行動生物学
  • 社会的認知

背景:

  • 社会的なやり取りは 他人の行動を理解することに依存します
  • ミラーニューロンは この理解を支える仮説です
  • 以前の研究では 霊長類の新皮質のミラーニューロンに 焦点を当てており 皮質下部の役割は 未知のままでした

研究 の 目的:

  • 社会的行動,特に攻撃性を 表現し,制御する 低頭部ニューロンの役割を調査する.
  • 攻撃性ニューロンがミラーリング特性 (自己と他の行動を表す) を示すかどうかを判断する.
  • 脳皮質下部のミラーニューロンの 存在と機能を研究する

主な方法:

  • ネズミの特定のニューロン集団を特定し,操作するために, 遺伝的にコードされたミラートラップ戦略を使用しました.
  • 攻撃的行動中の VMHvlPR ニューロンの活動を記録し分析した.
  • 実験的にVMHlPRニューロンを活性化して 攻撃的表象への影響を観察した.

主要な成果:

  • ネズミの視床下部にある 個々のVMHvlPRニューロンが 自己および他者による攻撃を表しています
  • 攻撃を反映する神経細胞の活動が 戦闘に不可欠であることを示しました
  • 強い神経細胞の活性化が 攻撃的表情を誘発することが示されました 鏡像に対してさえです

結論:

  • 進化的に古くからある 下垂体にある 皮質下部の"鏡像センター"を発見した
  • この下垂体ニューロンが 社会的行動 特に攻撃性の 重要な認知基質であることを 確立しました
  • 霊長類の新皮質の外にあるミラーニューロンシステムの存在と機能的重要性を証明した.