September 16, 2026Yifan Ren, Huyen Ngoc Pham, Xiong Xiong et al.
preprint
Background: Hallucinations span psychiatric and neurodegenerative disorders, yet unified neurobiological or consciousness-based explanations remain uncertain. Functional connectivity (FC) provides a network-level view with highly heterogeneous findings.Methods: Following PRISMA, we included studies with FC of hallucinations to ask whether it is sensitive to hallucinations, can distinguish...
Scientific ReportsJuly 30, 2024J. D. Griffin, K. M. J. Diederen, J. Haarsma et al.5 citations
We used a probabilistic reversal learning task to examine prediction error-driven belief updating in three clinical groups with psychosis or psychosis-like symptoms. Study 1 compared people with at-risk mental state and first episode psychosis (FEP) to matched controls. Study 2 compared people diagnosed with treatment-resistant schizophrenia (TRS) to matched controls. The design replicated our...
The N-methyl-d-aspartate (NMDA) receptor antagonist ketamine produces episodic memory deficits. We used functional magnetic resonance imaging to characterize the effects of ketamine on frontal and hippocampal responses to memory encoding and retrieval in healthy volunteers using a double-blind, placebo-controlled, randomized, within-subjects comparison of two doses of intravenous ketamine....