Publications by authors named "Celia Jantac"

Article Synopsis
  • The study investigates how early-adolescence prodromes in schizophrenia (SCZ) relate to social cognition deficits and sensorimotor impairments, comparing them to autism spectrum disorders (ASD).
  • It involves four groups: ASD, SCZ with early-adolescence prodromes (under 15), SCZ with late-adolescence prodromes (over 15), and a control group, analyzing their social cognition and neurological soft signs (NSS).
  • Findings indicate that SCZ with early prodromes show similar social cognition impairments as those with ASD, highlighting that age of prodrome onset plays a critical role in understanding SCZ subgroups rather than just the onset of psychosis.
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Background: Cognitive impairment constitutes a prevailing issue in the schizophrenia spectrum, severely impacting patients' functional outcomes. A global cognitive score, sensitive to the stages of the spectrum, would benefit the exploration of potential factors involved in the cognitive decline.

Methods: First, we performed principal component analysis on cognitive scores from 768 individuals across the schizophrenia spectrum, including first-degree relatives of patients, individuals at ultra-high risk, who had a first-episode psychosis, and chronic schizophrenia patients, alongside 124 healthy controls.

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Background: Sex differences in cognitive functioning have long been recognized in schizophrenia patients and healthy controls (HC). However, few studies have focused on patients with an at-risk mental state (ARMS) for psychosis. Thus, the aim of the present study was to investigate sex differences in neurocognitive performance in ARMS patients compared with HC.

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Interactions between social cognition and symptoms of schizophrenia have been investigated, but mostly component by component. Here we tested the assumption that two categories of deficits exist depending on clinical profiles, one corresponding to a defect in social cognition - "under-social cognition" - and one corresponding to excessive attributions leading to social cognitive impairments - "over-social cognition". To conduct the investigation, we performed a Hierarchical Clustering Analysis using positive and negative symptoms in seventy patients with schizophrenia and we compared the clusters obtained to a group of healthy controls on social cognitive measures.

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