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Related Concept Videos

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...
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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...
361
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...
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...
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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...
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Related Experiment Video

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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Investigating Connectivity Gradients in Schizophrenia: Integrating Functional, Structural, and Genetic Perspectives.

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
Summary
This summary is machine-generated.

Schizophrenia patients show altered brain functional gradients, particularly in visual and limbic networks. These connectome gradient changes link to genes involved in synaptic signaling and neuronal development.

Keywords:
functional connectivity gradientsgene expressionmorphological similarity gradient

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics

Background:

  • Schizophrenia is a complex disorder affecting cognition, behavior, and emotions.
  • Previous studies often examined brain structure or function separately, limiting synchronous analysis.
  • A multiparametric approach is crucial for understanding shared and distinct brain alterations in schizophrenia.

Purpose of the Study:

  • To investigate common and distinct alterations in brain structure and function in schizophrenia using a multiparametric approach.
  • To explore the relationship between neuroimaging findings and genetic underpinnings.
  • To identify potential neurobiological markers for schizophrenia.

Main Methods:

  • Analysis of structural and functional magnetic resonance imaging (MRI) data from 146 participants (72 schizophrenia, 74 controls).
  • Computation of individual morphological similarity and functional connectivity gradients using diffusion map embedding.
  • Gene expression enrichment analyses using Allen Brain Human Atlas and GOrilla.

Main Results:

  • Schizophrenia patients exhibited reduced principal functional gradient scores in the visual network.
  • Elevated scores were observed in the limbic, frontoparietal control, and default mode networks in patients.
  • Functional gradients in schizophrenia showed compression along the primary axis compared to controls.
  • These alterations were linked to genes involved in synaptic signaling and neuronal development.

Conclusions:

  • The study reveals connectome gradient dysfunction in schizophrenia, supporting widespread network-level abnormalities.
  • Findings highlight the linkage between altered functional gradients and gene expression profiles.
  • Integrated neuroimaging data offer insights into neurobiological underpinnings and potential biomarkers for treatment evaluation.