関連する実験動画
Updated: Jul 13, 2026

07:30
Using Chronic Social Stress to Model Postpartum Depression in Lactating Rodents
Published on: June 10, 2013
まとめ
代理母へのインプリントは,聴覚のストレス中に若い仔犬の緊急呼び出しを軽減しました. この発見は,インプリントが発達中の鳥のストレス抵抗性を高めることを示唆しています.
科学分野:
- 動物の行動 動物の行動
- 発達心理学の心理学について
- ストレス生理学 ストレス生理学
背景:
- インプリントなどの初期の経験は,生物の行動および生理学的反応を形作ることができます.
- ストレスに対する回復力を理解することは,動物の福祉と発達に関する研究において極めて重要です.
研究 の 目的:
- 幼鳥のストレス抵抗に対するインプリントの影響を調査する.
- 異なる条件下でインプリントされた子とインプリントされていない子のストレス反応を比較する.
主な方法:
- 幼鳥はインプリントと非インプリントのグループに分けられました.
- 両グループは,飢餓状態での生存と聴覚刺激への反応という2つのストレステストを受けていました.
- ストレスのときの代理母の存在または不在は,様々でした.
主要な成果:
- 飢餓状態での生存時間は,インプリントされた子とインプリントされていない子の間には違わなかった.
- インプリントされたチキは,インプリントされていないコントロールと比較して,聴覚刺激にさらされたときに,救急呼び出しを大幅に少なくしました.
結論:
- 代理母へのインプリントは,若い雛のストレスレジリエンス,特に声のストレス反応を高めるようです.
- ストレスのときの代理母の存在は,緊急通話に対する観察された影響を有意に変更しませんでした.
関連する概念動画
Hypothalamic-Pituitary Axis
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.
Imprinting
Behavioral imprinting is observed in some newborn animals and occurs when they develop strong and specific attachments to another animal (usually a parent) following brief, early-life exposures. Offspring imprint onto parents within a brief period after birth or hatching; this time window is called the critical period. Once imprinting occurs, the bond established between the parents and their offspring is usually long-lasting.
Introduction to Stress and Lifestyle
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
Psychological Responses to Stress
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...
Physiological Foundation of Stress
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...
Role of the Sympathetic Nervous System
Adrenaline triggers the...
Stress Response System
The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
Alarm stage
In the alarm stage, the body's initial...
Alarm stage
In the alarm stage, the body's initial...

