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Binge Eating Disorders01:23

Binge Eating Disorders

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Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
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Self-Schemas02:16

Self-Schemas

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In general, a schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
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One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.  
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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
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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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Errors as a Means of Reducing Impulsive Food Choice
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ヘドニックな食べ過ぎ

Dana M Small1,2,3

  • 1Departments of Neurology and Neurosurgery, Medicine, and Psychology, McGill University, Montreal, QC, Canada.

Science (New York, N.Y.)
|March 27, 2025
PubMed
まとめ
この要約は機械生成です。

ドーパミンを用いた特定の脳回路が マウスの食生活を制御します この発見は 食物消費と食欲の調節の 生物学的な基礎を理解するのに役立ちます

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Last Updated: Apr 1, 2026

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科学分野:

  • 神経科学
  • 行動科学
  • 生理学

背景:

  • 食物消費は複雑な神経経路によって 制御される複雑な行動です
  • ドーパミンのシグナル伝達は 報酬とモチベーションにおいて重要な役割を果たし 食事を含む様々な行動に影響を与えます

研究 の 目的:

  • マウスの食物消費を制御する特定のドーパミン神経回路を特定し,特徴づけること.
  • この回路が食欲と食事の行動を 調節する役割を明らかにするためです

主な方法:

  • 食事中に特定の脳の領域の神経活動を監視するために,in vivoカルシウムイメージングを使用します.
  • ドーパミン神経細胞の活動を操作する オプトジェネティック・テクニック
  • 神経生理学的記録と 行動分析を組み合わせた

主要な成果:

  • 特定のドーパミン回路が 食物摂取中に活性化されます
  • この回路の標的型活性化により 食物摂取が増加し 抑制により減少することが示されました
  • この回路は感覚信号と 動機付け状態を統合して 食事の行動を誘導します

結論:

  • 特定のドーパミナージック脳回路が マウスの食物消費を制御するのに不可欠です
  • この回路は食欲制御の鍵となる 神経基板であり 摂食障害の理解と治療の標的となる可能性があります