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Related Concept Videos

Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

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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.
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Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

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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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Psychological and Sociocultural Causes of Schizophrenia01:29

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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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Schizophrenia01:17

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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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Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

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Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
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Negative and Cognitive Symptoms of Schizophrenia01:30

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Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
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Related Experiment Video

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Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
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Schizophrenia and abnormal brain network hubs.

Mikail Rubinov1, Ed Bullmore

  • 1Author affiliations: Brain Mapping Unit; Behavioural and Clinical Neuroscience Institute; Department of Psychiatry, University of Cambridge, UK; Churchill College, University of Cambridge, UK.

Dialogues in Clinical Neuroscience
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PubMed
Summary
This summary is machine-generated.

Schizophrenia may be a brain network disorder. Research shows abnormalities in prefrontal, limbic, temporal, and parietal brain hubs, supporting the dysconnection hypothesis.

Keywords:
connectomehubnetworkneuroimagingschizophrenia

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Network Science

Background:

  • Schizophrenia is a complex psychiatric disorder with unknown causes.
  • A growing body of evidence suggests schizophrenia may stem from disrupted brain network organization.

Purpose of the Study:

  • To discuss the dysconnection hypothesis of schizophrenia.
  • To review methodologies for testing this hypothesis.
  • To examine evidence for disrupted brain hubs in schizophrenia.

Main Methods:

  • Review of studies investigating large-scale structural and functional brain networks.
  • Analysis of network abnormalities in central/hub brain regions.

Main Results:

  • Strong evidence for network abnormalities in prefrontal hubs.
  • Moderate evidence for network abnormalities in limbic, temporal, and parietal hubs.
  • These findings support the dysconnection hypothesis.

Conclusions:

  • Schizophrenia exhibits network dysfunction in key brain hubs.
  • Further research is needed to distinguish network dysfunction from structural abnormalities.
  • Linking network dysfunction to clinical symptoms is a critical future direction.