1. Functional Connectivity Anomalies in Adolescents with Psychotic Symptoms.
- Author
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Amico F, O'Hanlon E, Kraft D, Oertel-Knöchel V, Clarke M, Kelleher I, Higgins N, Coughlan H, Creegan D, Heneghan M, Power E, Power L, Ryan J, Frodl T, and Cannon M
- Subjects
- Adolescent, Auditory Cortex diagnostic imaging, Auditory Cortex pathology, Brain Mapping, Case-Control Studies, Cerebrum diagnostic imaging, Cerebrum pathology, Child, Female, Hallucinations diagnostic imaging, Hallucinations pathology, Humans, Magnetic Resonance Imaging, Male, Nerve Net diagnostic imaging, Nerve Net pathology, Neural Pathways diagnostic imaging, Neural Pathways pathology, Psychotic Disorders diagnostic imaging, Psychotic Disorders pathology, Auditory Cortex physiopathology, Cerebrum physiopathology, Hallucinations physiopathology, Nerve Net physiopathology, Neural Pathways physiopathology, Psychotic Disorders physiopathology
- Abstract
Background: Previous magnetic resonance imaging (MRI) research suggests that, prior to the onset of psychosis, high risk youths already exhibit brain abnormalities similar to those present in patients with schizophrenia., Objectives: The goal of the present study was to describe the functional organization of endogenous activation in young adolescents who report auditory verbal hallucinations (AVH) in view of the "distributed network" hypothesis of psychosis. We recruited 20 young people aged 13-16 years who reported AVHs and 20 healthy controls matched for age, gender and handedness from local schools., Methods: Each participant underwent a semi-structured clinical interview and a resting state (RS) neuroimaging protocol. We explored functional connectivity (FC) involving three different networks: 1) default mode network (DMN) 2) salience network (SN) and 3) central executive network (CEN). In line with previous findings on the role of the auditory cortex in AVHs as reported by young adolescents, we also investigated FC anomalies involving both the primary and secondary auditory cortices (A1 and A2, respectively). Further, we explored between-group inter-hemispheric FC differences (laterality) for both A1 and A2. Compared to the healthy control group, the AVH group exhibited FC differences in all three networks investigated. Moreover, FC anomalies were found in a neural network including both A1 and A2. The laterality analysis revealed no between-group, inter-hemispheric differences., Conclusions: The present study suggests that young adolescents with subclinical psychotic symptoms exhibit functional connectivity anomalies directly and indirectly involving the DMN, SN, CEN and also a neural network including both primary and secondary auditory cortical regions., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2017
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