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Psychological Responses to Stress01:20

Psychological Responses to Stress

997
Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
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Physiological Foundation of Stress01:24

Physiological Foundation of Stress

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Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
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Stress and Mental Health01:30

Stress and Mental Health

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Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
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Stress Prevention and Stress Management Techniques II01:23

Stress Prevention and Stress Management Techniques II

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Personality types, particularly Type A and Type B, significantly influence how individuals respond to stress. These personality distinctions are marked by varying levels of ambition, competitiveness, and coping styles, all of which shape an individual's resilience to stressors.
Type A Personality: Driven and Easily Stressed
Individuals with Type A personalities are often highly competitive and ambitious and operate with a strong sense of urgency. Commonly labeled as...
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Stress Prevention and Stress Management Techniques III01:25

Stress Prevention and Stress Management Techniques III

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Regular exercise and meditation serve as essential tools in managing stress and promoting physical and mental well-being.
The Role of Exercise in Stress Management
Regular physical activity is essential for reducing stress and promoting cardiovascular health. Exercise strengthens the heart, enhances blood flow, keeps blood vessels flexible, and helps lower blood pressure, all of which reduce the body's stress response. Research shows that adults who exercise regularly have nearly half the...
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Stress Prevention and Stress Management Techniques IV01:26

Stress Prevention and Stress Management Techniques IV

366
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
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Updated: May 6, 2026

Assessing the Multiple Dimensions of Engagement to Characterize Learning: A Neurophysiological Perspective
13:57

Assessing the Multiple Dimensions of Engagement to Characterize Learning: A Neurophysiological Perspective

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精神的ストレス検出のための新しいハイブリッド・ディープ・ラーニング・フレームワーク

Maithili Shailesh Andhare1,2, T Vijayan1, B Karthik1

  • 1Department of Electronics Communication Engineering, Bharath Institute of Higher Education and Research, Chennai 600073, India.

Brain sciences
|August 28, 2025
PubMed
まとめ

この研究は,脳波 (EEG) から精神的ストレスを検出するための新しいディープラーニングフレームワークであるBDDNetを紹介しています. BDDNetは,複数のディープラーニングモデルと最適化アルゴリズムを統合することで,ストレスの検出を向上させます.

キーワード:
深い信念のネットワークディープコンヴォルションニューラルネットワークディープラーニング人間の行動長い短期記憶ストレス検出

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科学分野:

  • 神経科学
  • コンピュータ科学
  • 人工知能

背景:

  • 様々なプレッシャーによって引き起こされる精神的ストレスは,人間の行動に大きく影響し,電気脳波 (EEG) を使用してますます研究されています.
  • ストレスを検出するための既存のディープラーニング (DL) 方法は,複雑な構造,クラス不均衡,信号処理の困難などの課題に直面しています.

研究 の 目的:

  • 精神的なストレスを検出するための新しいハイブリッド・ディープラーニング・フレームワーク"BDDNet"を紹介する.
  • ストレス検出のためのEEG信号のスペクトル・タイム特性表現と長期依存性分析を改善する.

主な方法:

  • ディープコンボリューションニューラルネットワーク (DCNN),双方向の長期短期記憶 (BiLSTM) とディープ信念ネットワーク (DBN) を組み合わせたハイブリッドフレームワークであるBDDNetを開発した.
  • 総合的なスペクトルと時間領域の分析のために複数のEEG機能 (MEF) を利用した.
  • 効率的なチャンネル選択のための改良されたクロウ検索アルゴリズム (ICSA) と,ハイパーパラメータチューニングのための従業員最適化アルゴリズム (EOA) を採用した.

主要な成果:

  • BDDNet-ICSAフレームワークは,公共のDEAPデータセットで優れたパフォーマンスを示しました.
  • 97.6%のリコール,97.6%の精度,97.6%のF1スコア,96.9%の選択性,96.9%の負の予測値 (NPV) および97.3%の精度を含む高いメトリックを達成しました.
  • ストレスを検知する 伝統的なテクニックを上回る

結論:

  • BDDNetは,EEGデータから精密な精神的ストレス検出のための堅牢で効果的なソリューションを提供します.
  • ハイブリッドのディープラーニングアプローチと最適化アルゴリズムは ストレスの検出能力を大幅に高めます
  • この枠組みは 非侵襲的な精神的ストレスモニタリングと管理を 推進する見込みです