前帯状皮質の状態依存反応性 侵入的思考における神経化学と下流の自律的興奮
Martino Schettino1,2, Chiara Parrillo3, Simone Gazzellini3
1Department of Psychology, Sapienza University of Rome, Rome, Italy.
Journal of neural transmission (Vienna, Austria : 1996)
|September 4, 2025
まとめ
一般的な不安障害における侵入的思考は,前帯状皮質におけるGABAの増加が,健康な個人とは異なり,自律的反応を抑制する脳のメカニズムによって維持される可能性があります. これは不安障害の新たな治療目標を示唆しています
科学分野:
- 神経科学
- 精神科
- 自律神経系の研究
背景:
- ストレスに起因する障害には 望ましくない侵入的思考が中心であり 往々にして 戦うか逃げるか という反応が伴います
- 侵入的思考と関連する生理学的反応を支える正確なメカニズムは完全に理解されていません.
研究 の 目的:
- 侵入的思考の際に神経代謝と自律神経系の活動を調査する.
- 一般的な不安障害 (GAD) と侵入的思考におけるガンマアミノバター酸 (GABA) とグルタミン酸の役割を探求する.
主な方法:
- プロトン磁気共鳴スペクトロスコーピー,静止状態の機能的接続性,心拍数モニタリングを組み合わせたマルチモダルのアプローチを使用しました.
- GAD (n=29) と健康な対照群 (n=29) で実験的に誘発された侵入的思考
- 前帯状皮質 (ACC) のGABA+レベルと自律的反応性を測定した.
主要な成果:
- GADを持つ個人は,侵入的思考中に抑制された自律的反応と相関するACC GABA+の増加を示しました.
- GADのこの関連性は,侵入的思考の傾向によって媒介され,中央自律ネットワークの活動が低下した.
- 健康な対照群では,侵入的思考中にACC GABA+が減少し,自律的反応性が増加した.
結論:
- GADの病理的な侵入的思考は,中央および自律系を含む神経代謝の負の強化によって維持されることがあります.
- 発見はこれらの適応不良の強化プロセスを妨害する潜在的な治療目標を示唆しています.
- 結果は,不安症状の維持における脳代謝と自律機能の相互作用を強調しています.
さらに関連する動画
08:42Design and Implementation of an fMRI Study Examining Thought Suppression in Young Women with, and At-risk, for Depression
Published on: May 19, 2015
10.8K
09:00Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
Published on: April 15, 2015
12.4K
関連する概念動画
Cognitive Theories: Schachter-Singer Theory of Emotion
579
Stanley Schachter and Jerome Singer proposed the two-factor theory of emotion, which emphasizes the interplay between physiological arousal and cognitive labeling in forming emotional experiences. This theory suggests that emotions are not simply a result of physiological responses but rather a combination of these responses and the individual's cognitive interpretation of them.
Physiological Arousal and Cognitive Labeling
According to this theory, when an individual experiences...
Physiological Arousal and Cognitive Labeling
According to this theory, when an individual experiences...
579
Physiology of Emotion
1.4K
The physiology of emotions is a multifaceted process involving the autonomic nervous system, brain structures, hormones, and neurotransmitters. This intricate interplay dictates how emotions manifest in the body and influence behavior.
Autonomic Nervous System
The autonomic nervous system (ANS) plays a critical role in emotional responses by regulating involuntary physiological functions. It consists of two main components: the sympathetic and parasympathetic systems. The sympathetic system...
Autonomic Nervous System
The autonomic nervous system (ANS) plays a critical role in emotional responses by regulating involuntary physiological functions. It consists of two main components: the sympathetic and parasympathetic systems. The sympathetic system...
1.4K
Sympathetic Activation
5.7K
The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
5.7K
Reason and Intuition
6.9K
The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
6.9K
Hypothalamic-Pituitary Axis
61.6K
The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
61.6K
