Abnormal functional connectivity of high-frequency rhythms in drug-naïve schizophrenia

Schizophrenia (SZ) is a severe and chronic mental disorder characterized by distinct positive symptoms (e.g., delusions and hallucinations), negative symptoms (e.g., diminished expression or abolition of motivation), and cognitive deficits. Although the exact pathophysiology remains unclear, recent neuroimaging-based evidence points to the "dysconnection hypothesis" as a core pathophysiological mechanism of SZ (Friston, 1998; Ribolsi et al., 2009; Schmitt et al., 2011; Stephan et al., 2006). According to this hypothesis, patients with SZ have an impaired brain network, which leads to deviation from optimum functional connectivity reflected in at least some symptoms of SZ (Ćurčić-Blake et al., 2017; Mulert et al., 2011).

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