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Related Concept Videos

Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

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

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

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

Psychological and Sociocultural Causes of Schizophrenia

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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Related Experiment Video

Updated: May 7, 2026

An Automated T-maze Based Apparatus and Protocol for Analyzing Delay- and Effort-based Decision Making in Free Moving Rodents
07:42

An Automated T-maze Based Apparatus and Protocol for Analyzing Delay- and Effort-based Decision Making in Free Moving Rodents

Published on: August 2, 2018

Neural substrates underlying effort computation in schizophrenia.

Gagan Fervaha1, George Foussias, Ofer Agid

  • 1Schizophrenia Division, Centre for Addiction and Mental Health, Toronto, Canada; Institute of Medical Science, University of Toronto, Toronto, Canada.

Neuroscience and Biobehavioral Reviews
|September 17, 2013
PubMed
Summary
This summary is machine-generated.

Schizophrenia patients show reduced effort, impacting daily life. This review explores neurobiology and research methods for better understanding effort-based decision-making in schizophrenia.

Keywords:
AmotivationAnterior cingulate cortexApathyAvolitionCost-benefit decision makingDopamineEffortMotivationNegative symptomsRewardSchizophrenia

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Chronic Stress Shifts Effort-Related Choice Behavior in a Y-Maze Barrier Task in Mice

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Behavioral Science

Background:

  • Reduced initiative and effort in schizophrenia patients correlate with functional impairments.
  • Current assessments of effort and motivation in schizophrenia are limited by reliance on subjective recall.
  • Understanding the neurobiology of effort is crucial for developing targeted interventions.

Purpose of the Study:

  • To review paradigms used in rodents and humans to assess effort-based decision-making.
  • To discuss the neurobiological underpinnings of effort-based decisions.
  • To explore current knowledge and future research directions regarding effort in schizophrenia.

Main Methods:

  • Literature review of behavioral neuroscience paradigms for assessing effort in rodents and humans.
  • Synthesis of neurobiological findings related to effort-based decisions.
  • Analysis of existing research on effort in schizophrenia and related human populations.

Main Results:

  • Established paradigms exist in behavioral neuroscience to quantify effort-based decisions in animal models and humans.
  • Neurobiological mechanisms underlying effort-based choices are being elucidated through various experimental approaches.
  • Limited but growing evidence suggests alterations in effort-related neurobiology may contribute to schizophrenia symptoms.

Conclusions:

  • More rigorous measurement of effort is needed to understand its neurobiology in schizophrenia.
  • Paradigms from animal models and human studies offer valuable tools for this investigation.
  • Future research should focus on the neurobiology of effort cost computation in schizophrenia to improve functional outcomes.