Association between Psychotic Symptoms and Cortical Thickness Reduction across the Schizophrenia Spectrum

Oertel-Knoechel, V., Knoechel, C., Rotarska-Jagiela, A., Reinke, B., Prvulovic, D., Haenschel, C., Hampel, H. & Linden, D.E.J. (2013). Association between Psychotic Symptoms and Cortical Thickness Reduction across the Schizophrenia Spectrum. CEREBRAL CORTEX, 23(1), pp. 61-70. doi: 10.1093/cercor/bhr380

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Abstract

The current study provides a complete MRI analysis of thickness throughout the cerebral cortical mantle in patients with schizophrenia (SZ) and rigorously screened and matched unaffected relatives and controls and an assessment of its relation to psychopathology and subjective cognitive function. We analyzed 3D-anatomical magnetic resonance imaging data sets, obtained at 3 Tesla, from three different subject groups: 25 SZ patients, 29 first-degree relatives and 37 healthy control subjects. We computed whole-brain cortical thickness using the Freesurfer software and assessed group differences. We also acquired clinical and psychometric data. The results showed markedly reduced cortical thickness in SZ patients compared with controls, most notably in the frontal and temporal lobes, in the superior parietal lobe and several limbic areas, with intermediate levels of cortical thickness in relatives. In both patients and relatives, we found an association between subjective cognitive dysfunction and reduced thickness of frontal cortex, and predisposition towards hallucinations and reduced thickness of the superior temporal gyrus. Our findings suggest that changes in specific cortical areas may predispose to specific symptoms, as exemplified by the association between temporal cortex thinning and hallucinations.

Item Type: Article
Additional Information: This is a pre-copyedited, author-produced PDF of an article accepted for publication in Cerebral Cortex following peer review. The version of record: Viola Oertel-Knöchel, Christian Knöchel, Anna Rotarska-Jagiela, Britta Reinke, David Prvulovic, Corinna Haenschel, Harald Hampel, and David E.J. Linden, Association between Psychotic Symptoms and Cortical Thickness Reduction across the Schizophrenia Spectrum Cereb. Cortex (2013) 23 (1): 61-70 is available online at: DOI: 10.1093/cercor/bhr380
Uncontrolled Keywords: cortical thickness, schizophrenia, first-degree relatives, hallucinations, endophenotype
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: School of Social Sciences > Department of Psychology
URI: http://openaccess.city.ac.uk/id/eprint/13808

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