一个黑人体投影调解厌恶,并增强应对对潜在威胁的应对反应
Ping-Chen Ho1, Fu-Yun Hsiao1, Shi-Hong Chiu2
1The Laboratory for Neural Circuits and Behaviors, Graduate Institute of Brain and Mind Sciences, National Taiwan University, Taipei, Taiwan.
概括
腹部中脑的中脑.
科学领域:
- 神经科学是一个神经科学.
- 行为神经科学 行为神经科学
背景情况:
- 在腹膜区域 (VTA) 和黑体 (SN) 的非多巴胺基 (非DA) 神经元影响动机和防御.
- 不确定区 (Zona incerta,简称ZI) 响应威胁,并从腹部中脑接收输入,但这种连接的功能尚不清楚.
研究的目的:
- 调查腹部中脑向不确定的区域投射的功能.
- 确定特定神经元通路在防御行为中的作用.
主要方法:
- 使用逆行式AAV标记从腹部中脑突出的非DA神经元到ZI.
- 测量神经元激活,以应对压力和掠夺性气味.
- 操纵SN-to-ZI通路活动以观察行为效应.
主要成果:
- 智能智能接收来自腹部中脑的各种输入.
- 腹部中脑中的ZI投射非DA神经元在压力下激活.
- SN-to-ZI的GABAergic投射被捕食者的气味激活.
- 激活SN-to-ZI通路会引起厌恶,并通过无抑制来增强防御行为.
结论:
- 黑内体投射在消极价值和防御行为中起着关键作用.
- 这一途径通过下游目标的消抑制来调解厌恶和威胁反应.
相关概念视频
Avoidance Learning and Learned Helplessness
1.7K
Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
1.7K
Aggression
27.8K
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...
27.8K
Preparedness and Phobias
104
Human fear responses to certain stimuli, such as darkness, heights, deep water, and blood, can often arise despite the absence of direct negative experiences. This phenomenon is rooted in evolutionary psychology, which posits that humans have developed a predisposition to fear stimuli that historically posed significant survival threats. This predisposition, known as preparedness, suggests that early humans who developed a fear of potentially dangerous entities, such as venomous snakes and...
104
Role of Amygdala in Memory
242
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
242
Horney's Sociocultural Approach
545
Karen Horney's psychoanalytic theories emphasize the potential for self-realization and the importance of addressing social and cultural, rather than biological, factors in personality development. She challenged traditional Freudian views, particularly Freud's concept of "penis envy," which she argued stemmed from cultural influences rather than inherent biological differences. Horney believed that any sense of inferiority in women was a result of societal conditioning, such as...
545
Cognitive Theories: Lazarus Mediational Theory of Emotion
885
Richard Lazarus' cognitive mediational theory highlights the pivotal role of cognitive appraisal in shaping emotional responses. According to this theory, the evaluation of a stimulus — based on personal values, goals, beliefs, and expectations — mediates the emotional response. This appraisal process is immediate and often occurs unconsciously, influencing the intensity and nature of the resulting emotion.
Cognitive Appraisal and Emotional Response
Lazarus proposed that...
Cognitive Appraisal and Emotional Response
Lazarus proposed that...
885


