Resting state perfusion in the language network is linked to formal thought disorder and poor functional outcome in schizophrenia.

Stegmayer, Katharina; Stettler, M; Strik, Werner; Federspiel, Andrea; Wiest, Roland; Bohlhalter, Stephan; Walther, Sebastian (2017). Resting state perfusion in the language network is linked to formal thought disorder and poor functional outcome in schizophrenia. Acta psychiatrica Scandinavica, 136(5), pp. 506-516. Wiley-Blackwell 10.1111/acps.12790

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OBJECTIVE Formal thought disorder (FTD) is a core symptom in schizophrenia. Here, we focus on resting state cerebral blood flow (rCBF) linked to dimensions of FTD. METHODS We included 47 schizophrenia spectrum patients and 30 age- and gender-matched healthy controls. We assessed FTD with the assessment of thought, language, and communication (TLC) and imaging on a 3T MRI scanner. Within patients, we tested the association of FTD dimensions and in a subgroup (n = 27) the association of functional outcome after 6 months with whole brain rCBF. RESULTS Negative FTD was most prominently associated with perfusion within the superior temporal gyrus, while positive FTD was associated with perfusion within the supplementary motor area, and inferior frontal gyrus. Perfusion within the left supramarginal gyrus was associated with social functioning after 6 months. CONCLUSIONS Distinguishable associations of rCBF with FTD dimensions point to distinct underlying pathophysiology. The location of aberrant perfusion patterns suggests that negative FTD might reflect defective access to semantic memory while positive FTD likely reflects defective suppression of irrelevant information during increased speech production. Finally, the neural correlates of thought block were also predictive of poor functional outcome. Thus, functional outcome and distinct FTD dimensions may share some pathophysiology.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Translational Research Center
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic and Interventional Neuroradiology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DCR Unit Sahli Building > Forschungsgruppe Neurologie

UniBE Contributor:

Stegmayer, Katharina; Strik, Werner; Federspiel, Andrea; Wiest, Roland; Bohlhalter, Stephan and Walther, Sebastian

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0001-690X

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Martin Zbinden

Date Deposited:

14 Nov 2017 11:40

Last Modified:

14 Nov 2017 11:48

Publisher DOI:

10.1111/acps.12790

PubMed ID:

28865406

Uncontrolled Keywords:

formal thought disorder semantic processing social functioning speech production symptom dimensions

BORIS DOI:

10.7892/boris.105344

URI:

https://boris.unibe.ch/id/eprint/105344

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