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相关概念视频

Obsessive-Compulsive Disorder01:28

Obsessive-Compulsive Disorder

130
Obsessive-compulsive disorder (OCD) is a mental health condition characterized by recurrent obsessions, compulsions, or both, which consume significant time and interfere with daily functioning. Obsessions involve persistent, intrusive, and unwanted thoughts, images, or urges that evoke anxiety. Common examples include irrational fears of contamination or harm. Compulsions are repetitive behaviors or mental acts performed to reduce the anxiety caused by obsessions. For instance, individuals...
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Personality Disorders: Dependent and Obsessive-Compulsive01:24

Personality Disorders: Dependent and Obsessive-Compulsive

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Dependent personality disorder and obsessive-compulsive personality disorder are two separate psychological conditions that influence behavior, relationships, and overall life functioning. Though both involve maladaptive behaviors, their core characteristics and motivations differ significantly.
 Dependent Personality Disorder
Dependent personality disorder is characterized by an excessive reliance on others to manage various aspects of life. Individuals with this disorder often struggle...
41
Theoretical Approaches to Psychological Disorder01:29

Theoretical Approaches to Psychological Disorder

226
The development of psychological disorders, which are characterized by deviant, maladaptive, and personally distressing behaviors, has been explored through several theoretical approaches.
Biological approach
The biological approach posits that internal, organic factors are the primary causes of such disorders. This perspective emphasizes brain structure and function, genetic predispositions, and neurotransmitter imbalances. For example, schizophrenia has been associated with both genetic...
226
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

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Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
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Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

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Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
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What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
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相关实验视频

Updated: Jul 4, 2025

Signal Attenuation as a Rat Model of Obsessive Compulsive Disorder
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使用网络扩散模型预测强迫症病理的传播.

Liang Liu1, Dongyao Jia1, Chuanwang Zhang1

  • 1School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China.

Journal of affective disorders
|January 30, 2024
PubMed
概括

强迫症 (OCD) 中的结构性大脑异常通过健康的大脑网络传播. 右前带带皮质作为强迫症患者这种病理传播的关键起点.

关键词:
灰色物质体积,灰色物质体积.网络扩散模型 网络扩散模型强迫症是一种强迫症.一个进步的进步.

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科学领域:

  • 神经科学是一个神经科学.
  • 精神病学是一个精神病学.
  • 网络科学 网络科学

背景情况:

  • 神经精神疾病通常涉及通过神经网络传播的结构性大脑异常.
  • 关于异常网络传播的先前研究尚未应用于强迫症 (OCD).
  • 强迫症的特点是广泛的结构性大脑异常,这表明基于网络的传播机制.

研究的目的:

  • 调查健康的功能性大脑网络是否影响强迫症中结构性大脑异常.
  • 为了确定这些异常在强迫症的潜在种子区域和传播模式.

主要方法:

  • 在98名强迫症患者和130名健康对照人群 (HCs) 中,比较了灰质形态.
  • 利用网络扩散模型 (NDM) 识别种子区域和疾病传播途径.
  • 在神经退行性疾病中,NDM在追踪病理传播方面有着经过验证的记录.

主要成果:

  • 右前带带皮质被确定为最有可能在强迫症中出现灰质异常的种子区域.
  • 病理偏好地从种子区域传播到更高阶的大脑系统.
  • 病理到达非种子区域的时间与其与种子区域的功能网络距离负相关 (r = -0.46,p < 0.001).

结论:

  • 强迫症中的结构性大脑异常受到潜在的健康功能性大脑网络架构的限制.
  • 这项研究揭示了强迫症病理进展的时间序列,起源于右前带带皮层.
  • 研究结果强调了网络连接在强迫症的结构变化表现中的作用.