Related Experiment Video
Updated: Aug 11, 2026
05:52
Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
[Dreaming and schizophrenia: a common neurobiological background?]
1Département des Sciences de la Vie, Faculté des Sciences, Université de Nice-Sophia Antipolis, 06108 Nice Cedex 2, France. claude.gottesmann@unice.fr
Medecine Sciences : M/S
|February 7, 2006
Summary
Rapid eye movement (REM) sleep neurochemistry, particularly dopamine surges and glutamate decreases in the nucleus accumbens, mirrors schizophrenia's brain activity. This suggests REM sleep is a valuable neurobiological model for studying psychosis.
Area of Science:
- Neuroscience
- Psychiatry
- Sleep Science
Context:
- Normal waking mentation relies on balanced cortical electrophysiological and neurochemical activity.
- Rapid eye movement (REM) sleep involves monoaminergic silence, disrupting this balance and affecting mental activity.
- This REM sleep imbalance shares similarities with neurobiological changes observed in schizophrenia.
Purpose:
- To explore the neurochemical underpinnings of dreaming during REM sleep.
- To investigate the parallels between REM sleep mentation and the pathophysiology of schizophrenia.
- To propose REM sleep as a neurobiological model for schizophrenia.
Summary:
- REM sleep is characterized by altered neurochemistry, including dopaminergic activity and reduced noradrenaline/serotonin, leading to cortical disconnectivity and prefrontal deactivation.
- Psychotic-like features of dreaming, such as hallucinations and delusions, may arise from dopamine disinhibition in the nucleus accumbens and altered glutamate signaling.
- The functional states of the prefrontal cortex and nucleus accumbens during REM sleep closely resemble those in schizophrenia, supporting its use as a model.
Impact:
- Suggests REM sleep's unique neurochemical environment can induce psychotic-like experiences.
- Highlights the potential of REM sleep studies to advance understanding and treatment of schizophrenia.
- Provides a novel neurobiological framework for investigating psychosis.
Related Concept Videos
01:29Biological 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.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
01:27Psychosis: 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...
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...
01:29Psychological 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...
01:30Dreaming
Sigmund Freud revolutionized our understanding of dreams by proposing that they are a window into the unconscious mind. According to Freud, dreams are not mere stories our minds create while we sleep but are profoundly meaningful narratives about our hidden desires and fears. He introduced two key concepts: manifest content and latent content. The manifest content is the actual content and imagery of the dream — what we remember when we wake up. The latent content, however, represents the...
01:17Schizophrenia
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 diagnosed.
01:30Positive Symptoms of Schizophrenia: Hallucinations and Delusions
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 loosely...
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes loosely...