Hallucinations and reality interact in distinct ways in individuals with schizophrenia
Multiple neuroimaging and cognitive studies support the claim that hallucinations in individuals with schizophrenia are rooted in distinct disruptions of reality-monitoring, sensory processing, and brain network connectivity.
The retrieved papers consistently demonstrate that hallucinations in schizophrenia are associated with specific neurological and cognitive abnormalities, such as altered functional connectivity, reality-monitoring and source-monitoring deficits, and sensory processing alterations. Because multiple high-quality studies substantiate these distinct interactions between hallucinations and reality processing in schizophrenia with no refuting papers, the claim is supported.
Ćurčić-Blake B, Ford JM, Hubl D, Orlov ND, Sommer IE, Sommer IE, Waters F, Allen P, Jardri R, Woodruff PW, David O, Mulert C, Woodward TS, Aleman A. Interaction of language, auditory and memory brain networks in auditory verbal hallucinations.. 2017. https://doi.org/10.1016/j.pneurobio.2016.11.002
Study 0 shows that auditory verbal hallucinations in schizophrenia involve distinct functional and anatomical connectivity abnormalities across language, auditory, and memory brain networks.
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Ł. Gawęda, Martyna Krężołek. Cognitive mechanisms of alexithymia in schizophrenia: Investigating the role of basic neurocognitive functioning and cognitive biases.. 2019. https://doi.org/10.1016/j.psychres.2018.12.023
Study 2 links the severity of hallucinations in schizophrenia to specific cognitive deficits and source-monitoring biases, indicating distinct cognitive mechanisms interacting with reality.
J. Kayser, C. Tenke, Christopher J. Kroppmann, Daniel M. Alschuler, S. Fekri, R. Gil, L. F. Jarskog, J. Harkavy-Friedman, G. Bruder. A Neurophysiological Deficit in Early Visual Processing in Schizophrenia Patients with Auditory Hallucinations. 2012. https://doi.org/10.1111/j.1469-8986.2012.01404.x
Study 4 demonstrates that patients with schizophrenia prone to hallucinations exhibit early visual processing deficits, indicating distinct perceptual and sensory integration patterns.
Marine Mondino, Clément Dondé, Layla Lavallé, Frédéric Haesebaert, Jérôme Brunelin. Reality-monitoring deficits and visual hallucinations in schizophrenia. 2019. https://doi.org/10.1016/j.eurpsy.2019.08.010
Study 6 finds that schizophrenia patients with both visual and auditory hallucinations display specific reality-monitoring and externalization biases compared to those with auditory hallucinations alone.
Blom JD, Nanuashvili N, Waters F. Time Distortions: A Systematic Review of Cases Characteristic of Alice in Wonderland Syndrome.. 2021. https://doi.org/10.3389/fpsyt.2021.668633
Study 8 highlights temporal desynchronization across sensory modalities in psychosis as a distinct underlying mechanism for reality and time distortions.
Stephan-Otto C, Núñez C, Lombardini F, Cambra-Martí MR, Ochoa S, Senior C, Brébion G. Neurocognitive bases of self-monitoring of inner speech in hallucination prone individuals.. 2023. https://doi.org/10.1038/s41598-023-32042-4
Study 11 links verbal hallucinations and proneness in schizophrenia-spectrum states to specific failures in self-monitoring and atypical neural activation in language and decisional areas.
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