ArticleBMC psychiatry2025
Subregional amygdala functional connectivity abnormalities and anhedonia impairments in first-episode schizophrenia.
Article in BMC psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Abnormal resting-state functional connectivity in anhedonia: A systematic review and meta-analysis.Brain imaging and behavior · 2026Pooled it
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Authors and funding
9 authors.
Funding
Abstract
backgroundAlthough abnormal amygdala functional connectivity (FC) has been reported in schizophrenia, most studies have treated the amygdala as a single structure. This study aimed to explore the association between amygdala subregional FC and anhedonia in patients with first-episode schizophrenia (FES).
methodsResting-state functional magnetic resonance imaging (fMRI) was conducted in 31 FES patients (including 11 drug-naïve) and 33 matched healthy controls (HCs). Clinical symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS), and anhedonia was evaluated via the Snaith-Hamilton Pleasure Scale (SHAPS). Whole-brain FC analyses of amygdala subregions were performed, followed by group comparisons and correlation analyses with anhedonia scores.
resultCompared to HCs, FES patients showed significantly reduced FC between specific amygdala subregions and cortical regions, particularly within the frontal, temporal, parietal, and limbic lobes (P < 0.05, GRF correction). Anhedonia severity was positively correlated with altered FC in the centromedial (CM) subregion of the amygdala (AMY_CM), especially with the supplementary motor area (SMA) and paracentral lobule (PLG). Notably, the association between right AMY_CM and right SMA FC and anhedonia remained significant after adjusting for clinical symptom severity (r = 0.46, P = 0.02).
conclusionsFES patients exhibit disrupted FC between amygdala subregions and cortical areas, with specific patterns linked to anhedonia. These findings suggest that anhedonia may be associated with a potential neurobiological marker independent of general clinical symptoms and may be indicative of amygdala-cortical dysconnectivity in schizophrenia.
trial registrationData used for this analysis came from case-control studies. CLINICAL TRIAL NUMBER: not applicable. (April 2018 through March 2021).
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