Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

Positive Symptoms Schizophrenia: Hallucinations and Delusions

1.1K
Schizophrenia is a complex psychiatric disorder characterized by a range of symptoms that significantly impact cognition, behavior, and emotional regulation. Among these, the positive symptoms stand out as they involve the addition or exaggeration of normal mental functions, deviating markedly from typical behavior and perception. Hallucinations and delusions are prominent positive symptoms, each profoundly affecting the individual's experience of reality.
Hallucinations
Hallucinations in...
1.1K
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

1.3K
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.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
1.3K
Visual Agnosia01:12

Visual Agnosia

2.0K
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
2.0K
Schizophrenia01:17

Schizophrenia

1.8K
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...
1.8K
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

8.3K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
8.3K
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

1.1K
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.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
1.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Transcranial direct current stimulation to treat drug-resistant hallucinations in adolescents.

European child & adolescent psychiatry·2026
Same author

Social Media-Based Professional Intervention vs Resource Provision for Youth With Suicidal Ideation or Behavior: Protocol for a Randomized Controlled Trial.

JMIR research protocols·2026
Same author

Methylphenidate and Psychotic Symptoms in Children and Adolescents: A Disproportionality Analysis on the WHO Safety Database (VigiBase).

Journal of child and adolescent psychopharmacology·2026
Same author

Perceptual multistability: a multifaceted window into brain dysfunctions.

Trends in cognitive sciences·2026
Same author

Designing empirically-based personæ to support a human-sensitive implementation of national suicide prevention strategies.

L'Encephale·2026
Same author

<i>"You feel like you're not alone</i>": Exploring a sociotechnical assembly in suicide prevention.

Health (London, England : 1997)·2026

Related Experiment Video

Updated: Apr 25, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

24.7K

What visual illusions teach us about schizophrenia.

Charles-Edouard Notredame1, Delphine Pins2, Sophie Deneve3

  • 1Pediatric Psychiatry Department, University Medical Centre of Lille Lille, France ; SCA-Lab, PSYCHIC Team, Université Lille Nord de France Lille, France.

Frontiers in Integrative Neuroscience
|August 28, 2014
PubMed
Summary

Visual illusions offer insights into schizophrenia, revealing altered perception in patients. A Bayesian framework explains these changes, linking sensory evidence with prior beliefs for a holistic view of visual processing impairments.

Keywords:
Bayesian inferencedelusionshallucinationsillusionspredictive codingpsychosisschizophreniavisual perception

More Related Videos

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

4.9K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

1.0K

Related Experiment Videos

Last Updated: Apr 25, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior

Published on: April 16, 2014

24.7K
Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
05:43

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

4.9K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

1.0K

Area of Science:

  • Neuroscience
  • Psychology
  • Psychopathology

Background:

  • Visual illusions, a discrepancy between objective and perceived reality, are crucial for understanding visual perception.
  • Research suggests altered susceptibility to illusions in schizophrenia patients, though findings are debated.
  • Illusions serve as valuable tools to investigate normal perception and its pathological impairments.

Purpose of the Study:

  • To review the use of illusions in exploring visual perception in schizophrenia.
  • To examine psychophysical, neurophysiological, and functional perspectives of visual processing in schizophrenia.
  • To integrate findings within a hierarchical Bayesian inference framework.

Main Methods:

  • Systematic literature review of studies using illusions to investigate schizophrenia.
  • Analysis of psychophysical, neurophysiological, and functional data.
  • Application of a Bayesian inference model to explain perceptual alterations.

Main Results:

  • Illusory paradigms reveal core features of visual perception in schizophrenia.
  • A Bayesian framework provides a unified explanation for altered perception in schizophrenia.
  • The framework highlights the interplay between sensory evidence and prior knowledge in perception.

Conclusions:

  • Illusions are powerful tools for studying visual perception in schizophrenia.
  • Bayesian inference offers a compelling model for understanding perceptual changes and their neural underpinnings in schizophrenia.
  • This approach has implications for understanding positive symptoms, subjective experience, and behavioral disruptions in psychopathology.