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Hallucinations across sensory domains in people with post-traumatic stress disorder and psychosis.
Psychiatry Res
December 2024
King's College London, Institute of Psychiatry, Psychology & Neuroscience, Psychology Department, South London and Maudsley NHS Foundation Trust, UK.
Auditory hallucinations are common in people with histories of adversity, possibly indicating a causal relationship. However, hallucinations occur in multiple sensory modalities and the relationship between trauma and hallucinations in other sensory domains is less explored. We examined the occurrence of hallucinatory experiences in different sensory modalities in people with psychosis who also met criteria for Post-Traumatic Stress Disorder (n = 67).
View Article and Find Full Text PDFImpaired speaking-induced suppression in schizophrenia predicts auditory verbal hallucinations.
medRxiv
October 2024
Department of Psychiatry, University of California, San Francisco, CA.
A successful efference copy self-prediction suppresses auditory signals in the primary auditory cortex (A1) is necessary for speakers to successfully compare auditory feedback during speech production with auditory feedback during passive listening, this is called speaker-induced suppression (SIS). The top-rank positive symptom in schizophrenic (SZ) patients, auditory verbal hallucination, for instance, is hypothesized to relate to failure to distinguish the internal voice and external sounds, and this deficit is thought to be associated with impaired self-prediction in comparing external and self-generated contents. In this magnetoencephalographic imaging (MEGI) study, we compared SIS M100 in the primary auditory cortex (A1) between the healthy controls (HC; N = 30) and SZ patients (N = 22).
View Article and Find Full Text PDFRelationship between social cognition and emotional markers and acoustic-verbal hallucination in youth with post-traumatic stress disorder: Protocol for a prospective, 2-year, longitudinal case-control study.
PLoS One
July 2024
University Department of Child and Adolescent Psychiatry, Pediatric Hospitals of Nice CHU-Lenval, Nice, France.
Introduction: Auditory-verbal hallucinatory experiences (AVH) have a 12% prevalence in the general pediatric population. Literature reports a higher risk of developing AVH in post-traumatic stress disorder (PTSD). The persistence of AVHs during adolescence represents a risk of evolution into psychotic disorders.
View Article and Find Full Text PDFfMRI fluctuations within the language network are correlated with severity of hallucinatory symptoms in schizophrenia.
Schizophrenia (Heidelb)
October 2023
Department of Biological and Medical Psychology, University of Bergen, Bergen, Norway.
Although schizophrenia (SZ) represents a complex multiform psychiatric disorder, one of its most striking symptoms are auditory verbal hallucinations (AVH). While the neurophysiological origin of this pervasive symptom has been extensively studied, there is so far no consensus conclusion on the neural correlates of the vulnerability to hallucinate. With a network-based fMRI approach, following the hypothesis of altered hemispheric dominance (Crow, 1997), we expected that LN alterations might result in self-other distinction impairments in SZ patients, and lead to the distressing subjective experiences of hearing voices.
View Article and Find Full Text PDFEstradiol driven change in hallucination proneness across the menstrual cycle as studied with a white noise paradigm.
Psychoneuroendocrinology
January 2024
Psyliège Psychological Consultation Center, Liège, Belgium.
The estrogen hypothesis for schizophrenia suggests neuroprotective effects of estrogen for the development of the disorder and for symptom severity, including auditory hallucinations. Furthermore, estrogen has shown enhancing effects on cognitive control, a function that is also implicated in auditory hallucinations. Whether estrogen affects the tendency to hallucinate in healthy participants, and the potential mediating role of cognitive control, has not yet been studied.
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