View clinical trials related to Schizophrenia.
Filter by:This Cross-sectional Study Included Patients that diagnosed with schizophrenia, aged 18-55, 20 of which hospitalized in mental health department and 20 in medical follow-up. Different test will be administered, in two or three sessions, to evaluate cognitive ability, function ability and participation. The results of the VIS shopping task performance (statically & dynamically) and its correlation with the cognitive and function tests as well as the participation questionnaire will be examined. These findings will indicate whether the shopping task is valid to assess executive functions for people with schizophrenia and whether it is ecologically valid.
Recent research has suggested that mindfulness-based interventions (MBI) for psychosis may be effective in reducing the negative symptoms of schizophrenia (e.g., social withdrawal, lack of motivation) and the distress associated with psychotic symptoms (e.g., hearing voices) and could lead to improvements in functioning and quality of life. MBI research to date has primarily focused on studies of patients with chronic psychotic illness, yet relatively little is known about the use of MBIs for youth recovering from their first episode of psychosis. Results from recently published pilot studies appear promising in terms of the feasibility, acceptability, and potential clinical utility (e.g., improved psychological symptoms) of MBIs for the early psychosis population (Ashcroft et al., 2012; van der Valk et al., 2013; Khoury et al., 2015). The current project team has completed a pilot study at the Prevention and Early Intervention Program for Psychoses (PEPP) at London Health Sciences Centre (LHSC), wherein the "Mindfulness Ambassador Council" (MAC), a 12-week facilitated group intervention promoting mindfulness skills and the development of emotional and social competencies, was shown to be an effective, feasible, and acceptable means of treating youth in the early stages of psychotic illnesses. In follow up to the initial pilot study, the purpose of this study is to perform a multi-site Randomized Control Trial to determine the effectiveness of the MAC group intervention on reducing psychotic disorder symptomatology for transitional aged youth experiencing early psychosis. The main hypothesis, based on previous findings on the use of MBIs in psychotic disorders, including results from our initial pilot study at PEPP, is that people with early psychosis who participate in the MAC group intervention will experience improvement in mindfulness skills and affective symptoms compared to those receiving treatment as usual (TAU). Furthermore, we expect that people experiencing early psychosis who participate in MAC will have an improvement in their negative symptoms, quality of life, recovery (self-esteem, perceived recovery), perceived coping, assertiveness, social functioning, and cognitive skills, and a reduction in healthcare service utilization (e.g., emergency room visits, inpatient admissions/length of hospitalization).
Metacognition is the ability to introspect and report one's own mental states, or in other words to know how much one knows. It allows us to form a sense of confidence about decisions one makes in daily life, so one can commit to one option if our confidence is high, or seek for more evidence before commitment if our confidence is low. Although this function is crucial to behave adequately in a complex environment, confidence judgments are not always optimal. Notably, individuals with schizophrenia are prone to overconfidence in errors and underconfidence in correct answers. In schizophrenia, confidence is less correlated with performance compared to controls. These aspects are held to be at the origin of delusions, disorganization, poor insight into illness and into cognitive deficit and poor social functioning. Our study aims at identifying the cognitive and neural processes involved in metacognitive deficits in schizophrenia. Participants will perform metacognitive judgments on a low-level perceptual task (visual motion discrimination). Participants will do the first-order perceptual task by clicking on the correct answer with a mouse. During the first order task completion, the investigators will record several behavioral, physiological and neural variables. Then, participants will perform the metacognitive task with a visual analog scale. The study will address four research questions: - Q1: is schizophrenia associated with a decrease in metacognitive efficiency? Is the metacognitive deficit due to under- or over-confidence? - Q2: is the metacognitive impairment reflected at a decisional level as measured by behavioral variables (mouse tracking and reaction times)? - Q3: which physiological markers (EEG, skin conductance, heart rate) are predictors of metacognitive efficiency in individuals with schizophrenia and healthy controls? - Q4: which clinical symptoms correlate with metacognitive deficits? The investigators make several hypotheses related to the previous research questions: - Q1: the investigators expect metacognitive deficits in schizophrenia, based on results from several studies using both qualitative and quantitative measures. The investigators will rule out that quantitative deficits are not confounded with impairments in type 1 performance, with a generalized cognitive deficit in schizophrenia (lower premorbid and current Intelligence Quotient (IQ), and deficits in executive functioning and particularly in planning and working memory abilities), with depression or with statistical flaws during analysis of confidence. - Q2: the investigators expect behavioral cues (mouse tracking and reaction times) to be less correlated with confidence in patients vs. controls. The investigators thus make the hypothesis that the metacognitive deficit in schizophrenia may stem from an inability to integrate pre-decisional cues while performing an explicit metacognitive judgment. - Q3: the investigators expect physiological cues (EEG with Error-Related Negativity, Lateralized Readiness Potential and alpha suppression, and arousal of the autonomic nervous system with skin conductance and heart rate ) to be less correlated with confidence in patients vs. controls. - Q4: based on previous findings, the investigators expect that several clinical dimensions of schizophrenia may correlate with metacognitive performance. The metacognitive deficit would be greater for patients with high levels of positive and disorganized symptoms, and greater for patients with low levels of clinical and cognitive insight, and low levels of social functioning.
The investigators aim to establish a research project to test the impact of gaming by carrying out a digital gaming interventions, monitoring its cognitive and clinical outcomes, while concurrently performing a multimodal brain imaging experiment.
The purpose of this study is to determine the efficacy of combining open-label extended release bupropion (flexible dosing up to 450mg target) and naltrexone (37.5mg) versus Bupropion and placebo along with a daily 500 calorie reduction diet recommendation for weight and health risk reduction in 40 overweight/obese individuals with schizophrenia.
The focus of this study is not about what it is like to have a mental disorder, but instead the diagnostic experience. Some people find diagnoses helpful, but some find them upsetting and harmful. Research is therefore needed to improve diagnostic processes. It has been suggested that patient experiences and outcomes may be affected by the diagnostic tools used, including diagnostic criteria, labels and language. In the NHS, the tool used by doctors to help diagnose people is a guidebook called the International Classification of Diseases (ICD). A new version of this guide is due to be released in 2018. This project will use focus groups to ask people who use mental health services and diagnosing doctors in those services what they think about the labels and language in the new guide. The investigators can then suggest changes before the guide is published. The investigators hope that this research will improve mental health diagnosis. The research will take place in Norfolk and Suffolk and span eight months.
This is an observational, retrospective, non-interventional study that will include schizophrenic patients who were initiated on AOM treatment during an schizophrenia-related hospitalisation at least 6 months before data collection and in a real clinical practice setting.
This is an observational, non-interventional study that will include two cohorts of patients with schizophrenia who initiated maintenance treatment during a schizophrenia-related hospitalisation or during the immediate three months after hospital discharge: patients who initiated maintenance treatment with AOM and patients who initiated maintenance treatment with any daily oral atypical AP.
In order to establish target engagement and identify an effective dose the investigators will conduct a placebo-controlled single-dose parallel group trial of levetiracetam 185 mg and 500 mg in 24 medication-naïve early psychosis (EP) patients, measuring hippocampal activity by pulsed arterial spin labelling (ASL) pre-dose and 2 hours post-dose. The lower dose is calculated to achieve blood levels within the range that were associated with reduced hippocampal activity and improved cognition in patients with mild cognitive impairment; the higher dose is a typical antiepileptic dose. Successful demonstration of target engagement will be defined by an effect size of 0.5 or greater compared to placebo in reduction by levetiracetam of hippocampal blood flow measured by ASL. The optimal dose will be defined by maximal reduction of hippocampal perfusion in the absence of clinically-significant adverse effects. The investigators will also study 8 healthy control subjects to verify that baseline hippocampal blood flow is elevated in the sample of EP subjects.
Social impairments are core features of schizophrenia that lead to poor outcome. Social skills and competence improve quality of life and protect against stress-related exacerbation of symptoms, while supporting resilience, interpersonal interactions, and social affiliation. To improve outcome, we must remediate social deficits. Existing psychosocial interventions are moderately effective but the effort-intensive nature (high burden), low adherence, and weak transfer of skills to everyday life present significant hurdles toward recovery. Thus, there is a dire need to develop effective, engaging and low-burden social interventions for people with schizophrenia that will result in better compliance rates and functional outcome. The investigators will test the effectiveness of a novel adaptive virtual reality (VR) intervention in improving targeted social cognitive function (social attention, as indexed by eye scanning patterns) in individuals with schizophrenia. VR technology offers a flexible alternative to conventional therapies, with several advantages, including a simplified and low-stress social interaction environment with targeted opportunities to simulate, exercise and reinforce basic elements of social skills in a very wide range of realistic scenarios, and to repeat exposure to naturalistic situations from multiple angles.