6 research outputs found
Machine learning for multivariate parameter identification of first-principle model: the Mg(OH)2 test case
Wider and Stronger Inhibitory Ring of the Attentional Focus in Schizophrenia
Anomalies of attentional selection have been repeatedly described in individuals with schizophrenia spectrum disorders. However, a precise analysis of their ability to inhibit irrelevant visual information during attentional selection is not documented. Recent behavioral as well as neurophysiological and computational evidence showed that attentional search among different competing stimuli elicits an area of suppression in the immediate surrounding of the attentional focus. In the present study, the strength and spatial extension of this surround suppression were tested in individuals with schizophrenia and neurotypical controls. Participants were asked to report the orientation of a visual “pop-out” target, which appeared in different positions within a peripheral array of non-target stimuli. In half of the trials, after the target appeared, a probe circle circumscribed a non-target stimulus at various target-to-probe distances; in this case, participants were asked to report the probe orientation instead. Results suggest that, as compared to neurotypical controls, individuals with schizophrenia showed stronger and spatially more extended filtering of visual information in the areas surrounding their attentional focus. This increased filtering of visual information outside the focus of attention might potentially hamper their ability to integrate different elements into coherent percepts and influence higher order behavioral, affective, and cognitive domains
Adult ADHD: a study on evaluation and treatment pathways in Italian Mental Health Services. A black hole in the National System and the European Health System
Attention Deficit and Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder that often persists into adult-hood. The Italian situation regarding the clinical management of childhood ADHD shows some criticalities, despite the high preva-lence rate: diagnostic assessments are often inaccurate, protocols for transition from childcare services are almost non-existent and theItalian National Registry for ADHD in childhood was drawn up only in 2007, hence the first specialized services were created laterthan the rest of Europe. On the basis of these issues, we investigated the Italian situation with regard to disorders in adulthood, com-paring the different European operational models, assuming that these critical issues are reflected in the clinical management of thedisorder in adulthood. In fact, unlike other European countries, there are no official guidelines governing the clinical management ofthe disorder in adulthood and evidence-based pharmacotherapies, available in most European countries, are off-label or not allowedin Italy. The aim of the study is to evaluate the current state of knowledge and working method in relation to adult ADHD in the Ital-ian background and to identify the main evaluation and treatment pathways in Italian Mental Health Services. The study is also an at-tempt to clarify which services are operational on the Italian territory, with the aim of improving the quality of interventions for theclinical population. Three hundred thirty-eight services have been identified in all Italian Regions and Autonomous Provinces, includ-ing Mental Health Centres (CSM), Pathological Addition Services (SERD), Psychiatric Diagnosis and Treatment Services (SPDC). Anad-hoc survey with closed-ended questions was administered by telephone to each selected centre and the results were compared withthe European literature
Additional lesions identified by genomic microarrays are associated with an inferior outcome in low-risk chronic lymphocytic leukaemia patients
We explored the relevance of genomic microarrays (GM) in the refinement of prognosis in newly diagnosed low-risk chronic lymphocytic leukaemia (CLL) patients as defined by isolated del(13q) or no lesions by a standard 4 probe fluorescence in situ hybridization (FISH) analysis. Compared to FISH, additional lesions were detected by GM in 27 of the 119 patients (22.7%). The concordance rate between FISH and GM was 87.4%. Discordant results between cytogenetic banding analysis (CBA) and GM were observed in 45/119 cases (37.8%) and were mainly due to the intrinsic characteristics of each technique. The presence of additional lesions by GM was associated with age > 65 years (p = 0.047), advanced Binet stage (p = 0.001), CLL-IPI score (p < 0.001), a complex karyotype (p = 0.004) and a worse time-to-first treatment in multivariate analysis (p = 0.009). Additional lesions by GM were also significantly associated with a worse time-to-first treatment in the subset of patients with wild-type TP53 and mutated IGHV (p = 0.025). In CLL patients with low-risk features, the presence of additional lesions identified by GM helps to identify a subset of patients with a worse outcome that could be proposed for a risk-adapted follow-up and for early treatment including targeted agents within clinical trials