Exploring the cognitive profiles related to unimodal auditory versus multisensory hallucinations in schizophrenia-spectrum disorders

Hallucinations can be experienced across multiple sensory modalities, but psychiatric studies investigating the cognitive mechanisms of hallucinations have been somewhat restricted to the auditory domain. This study explored the cognitive profiles of individuals experiencing multisensory hallucinati...

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Bibliographic Details
Published in:	Cognitive neuropsychiatry Vol. 29; no. 1; pp. 55 - 71
Main Authors:	Bere, Mikaela J., Rossell, Susan L., Tan, Eric J., Carruthers, Sean P., Gurvich, Caroline, Neill, Erica, Sumner, Philip J., Van Rheenen, Tamsyn E., Toh, Wei Lin
Format:	Journal Article
Language:	English
Published:	England Routledge 02-01-2024 Taylor & Francis Ltd
Subjects:	auditory hallucinations Cognition Hallucinations hearing voices multisensory hallucinations nonauditory hallucinations schizoaffective disorder Schizophrenia multisensory hallucinations auditory hallucinations Cognition nonauditory hallucinations schizophrenia hearing voices schizoaffective disorder
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Summary:	Hallucinations can be experienced across multiple sensory modalities, but psychiatric studies investigating the cognitive mechanisms of hallucinations have been somewhat restricted to the auditory domain. This study explored the cognitive profiles of individuals experiencing multisensory hallucinations (MH) in schizophrenia-spectrum disorders (SSD) and compared these to those experiencing unimodal auditory hallucinations (AH) or no hallucinations (NH). Participants included SSD patients (n = 119) stratified by current hallucination status (NH, AH, MH) and nonclinical controls (NCs; n = 113). Group performance was compared across several cognitive domains: speed of processing, attention, working memory, verbal learning, visual learning, reasoning and problem-solving, social cognition, and inhibition. The clinical groups performed worse than NCs but differences between the clinical groups were not evident across most cognitive domains. Exploratory analyses revealed that the MH group was more impaired on the visual learning task compared to the NH (but not AH) group. Preliminary results suggest that impaired visual learning may be related to MH. This could be attributed to the presence of visual hallucinations (VH), or greater psychopathology, in this group. However, replication is needed, as well as the investigation of other potential cognitive mechanisms of MH.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1354-6805 1464-0619
DOI:	10.1080/13546805.2024.2314941