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相关概念视频

Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

31
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
31
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

361
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...
361
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

43
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...
43
Human Genetics01:28

Human Genetics

516
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
516
Schizophrenia01:17

Schizophrenia

55
Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those...
55
Theoretical Approaches to Psychological Disorder01:29

Theoretical Approaches to Psychological Disorder

68
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...
68

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相关实验视频

Updated: May 25, 2025

Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
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研究精神分裂症的连接梯度:整合功能,结构和遗传视角.

Jie Xiang1, Chengze Ma1, Xiuhui Chen2

  • 1College of Computer Science and Technology (College of Data Science), Taiyuan University of Technology, No. 79 Yingze West Street, Taiyuan 030024, China.

Brain sciences
|February 26, 2025
PubMed
概括

精神分裂症患者表现出大脑功能梯度的改变,特别是在视觉和边缘网络. 这些连接体梯度变化与参与突触信号传递和神经元发育的基因联系在一起.

关键词:
功能连接梯度的功能连接梯度.基因表达的基因表达方式形态相似度梯度的形态相似度.

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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.
  • 遗传学 遗传学 是一个

背景情况:

  • 精神分裂症是一种影响认知,行为和情绪的复杂疾病.
  • 以前的研究经常单独检查大脑结构或功能,限制了同步分析.
  • 多参数方法对于理解精神分裂症中共享和独特的大脑变化至关重要.

研究的目的:

  • 用多参数方法研究精神分裂症中大脑结构和功能的常见和明显的改变.
  • 探索神经成像发现与遗传基础之间的关系.
  • 为了确定精神分裂症的潜在神经生物学标志物.

主要方法:

  • 分析了来自146名参与者的结构和功能磁共振成像 (MRI) 数据 (72名精神分裂症患者,74名对照患者).
  • 使用扩散地图嵌入计算个体形态相似性和功能连接度梯度.
  • 基因表达丰富分析使用艾伦大脑人类图谱和戈丽拉.

主要成果:

  • 精神分裂症患者在视觉网络中表现出主要功能梯度得分的减少.
  • 在患者的边缘,前对对照和默认模式网络中观察到较高的得分.
  • 与对照组相比,精神分裂症的功能梯度在主要轴上显示压缩.
  • 这些变化与参与突触信号传递和神经元发育的基因有关.

结论:

  • 这项研究揭示了精神分裂症中连接体梯度功能障碍,支持广泛的网络水平异常.
  • 这些发现突出了改变的功能梯度和基因表达特征之间的联系.
  • 综合神经成像数据为治疗评估提供了神经生物学基础和潜在生物标志物的洞察力.