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Related Concept Videos

Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

Positive Symptoms Schizophrenia: Hallucinations and Delusions

62
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...
62
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

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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.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
133
Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

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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.
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,...
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False Memories01:18

False Memories

93
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
93
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

92
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

Schizophrenia

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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...
92

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Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
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Intrusive-like memory errors associate with positive schizotypy.

William N Koller1, Tyrone D Cannon1,2

  • 1Department of Psychology, Yale University, United States of America.

Schizophrenia Research. Cognition
|October 23, 2023
PubMed
Summary
This summary is machine-generated.

Individuals with positive symptoms of schizophrenia show more false memory errors, unlike those with negative symptoms. This suggests a specific memory impairment profile linked to positive symptom dimensions.

Keywords:
False alarmsMemorySchizophreniaSchizotypy

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Schizophrenia is associated with memory deficits.
  • The link between specific schizophrenia symptom clusters and memory errors is unclear.

Purpose of the Study:

  • To investigate the differential relationships between positive, negative, and disorganized schizophrenia symptoms and recognition memory errors (false alarms vs. misses).
  • To determine if positive symptoms uniquely predict specific types of memory errors.

Main Methods:

  • Utilized a large analog sample (N=795).
  • Employed mixed-effects beta regression analyses to examine associations between symptom dimensions and error types in recognition memory.

Main Results:

  • Positive schizotypy and paranoia were significantly associated with increased false alarm errors compared to miss errors.
  • Disorganized schizotypy showed a similar, though weaker, association with false alarms.
  • Negative schizotypy did not show a significant relationship with either error type.

Conclusions:

  • Positive schizotypy is linked to an "intrusive-like" memory profile, characterized by misattributing non-signal stimuli and generating spurious retrieval events.
  • This asymmetry in memory errors may stem from specific neural processes associated with positive symptoms in schizophrenia spectrum disorders.