Optimization of Neurophysiologic Biomarkers for Rehabilitation Interventions in Veterans With Chronic Psychosis
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- 1-week psychometric reliability of Aperiodic Spectral Biomarkers (neurophysiologic biomarker)
研究概览
简要总结
Cognitive symptoms of schizophrenia interfere with daily life-from managing self-care, to more complex tasks like taking medications and living independently. Unfortunately, these cognitive symptoms are not corrected by 'standard of care' treatments (antipsychotic medications), although some schizophrenia patients may experience modest clinical and cognitive benefits from cognitive remediation. To enhance the clinical impact of cognitive remediation and other rehabilitative interventions for Veterans living with chronic psychosis, this study will develop novel brain-based tools to help identify those Veterans who are most likely to benefit from pro-cognitive therapies. These studies may advance predictive algorithms that improve functional outcomes and life quality in Veterans with schizophrenia.
详细描述
This is an observational study recruiting Veterans with a diagnosis of Schizophrenia (SZ) and other Chronic Psychotic Disorders and Veterans in good general health (HS) who are enrolled in and/or receiving care at the VA San Diego Healthcare System. Eighty Veterans will undergo comprehensive neurophysiological, clinical, cognitive, and functional assessments in two "phases" (Phase 1: 30 SZ, 20 HS; Phase 2: 30 SZ).
In Phase 1 (Biomarker Optimization; Aims 1 & 2), Veterans will undergo systematic neurophysiologic testing designed to elicit spectral biomarkers linked to cortical excitation and inhibition ("E/I balance") during passive and stimulated conditions on two separate test visits (1-2 weeks apart). Experimental conditions will then be optimized for internal consistency and test-retest reliability using Generalizability Theory. The optimized biomarkers will be carried forward into Phase 2 (Biomarker Validation; Aim 3), where these neurophysiologic measures will be assessed before and after Veterans with SZ undergo 1 hour of cognitive training as a demonstration of neural system target engagement.
This proposal has 3 specific aims:
Aim 1. Identify the experimental conditions that optimize the psychometric properties (i.e., sensitivity to detect individual differences) of the spectral biomarkers linked to E/I balance.
Aim 2. Characterize the relationships of spectral biomarkers with rehabilitation-relevant outcomes.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Other
入排标准
- 年龄范围
- 18 Years 至 75 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Have a DSM-5 diagnosis of a chronic psychotic disorder (e.g., schizophrenia, schizoaffective disorder, or delusional disorder); or b) are in good general mental and physical health (i.e., no active mental health condition).
- •Fluent in spoken and written English.
- •No impairment in hearing or vision.
排除标准
- •Active substance other than cannabis within the last 30 days as determined by self-report or positive urine toxicology (obtained as part of the screening process).
- •History of significant medical or neurological illness or intellectual disability.
- •Inability to comprehend or provide informed consent.
- •Specific to healthy comparison subjects: past or present diagnosis of schizophrenia, schizoaffective disorder, or other chronic psychotic disorder.
结局指标
主要结局
1-week psychometric reliability of Aperiodic Spectral Biomarkers (neurophysiologic biomarker)
时间窗: Approximately 7 days
Estimates of aperiodic activity will be calculated from electroencephalography recordings collected at baseline (Day 1) and approximately 7 days later.
次要结局
- Cognitive training performance(Day 1/ Baseline)
- Functioning(Day 1/ Baseline)
- Symptoms(1 visit)
- Functioning - Quality of Life(Day 1/ Baseline)
- Cognition(Day 1/ Baseline)