The Brain & Psychosis: Asymmetry & cortical organization

描述（改编自申请人的摘要）：精神病的问题是 不经常被认为是独立的条件，它是 关联的.本实验室的研究表明， 使用听觉探测任务在有以下病史的双相情感障碍患者中的异常： 精神病与没有这种病史的人。这表明， 区分与精神病相关的大脑变量和与精神病相关的大脑变量。 精神疾病本身。研究人员现在建议研究30名受试者， 双相情感障碍和精神病史，30名双相受试者没有 有精神病史者30例，对照组30例（每组15例男性）。磁源 听觉成像（M100产生于Heschl's gyrus或连续平面 颞叶）和躯体感觉（M50产生于中央后回3b）。MRI 来自这些主题的数据将检查，识别和量化 这些MEG信号用于评估可能的皮质重组作为指标 精神病假设有精神病史的人 在功能和结构测量上表现出特定的异常。 改变的全地形和躯体地形将作为以下因素的前因或结果进行检查： 精神病这些发现将有助于识别有患病风险的个人， 将精神障碍中的疾病和精神病相关的大脑变化分开。

DESCRIPTION (Adapted from applicant's abstract): The problem of psychosis is not often considered independently from the conditions with which it is associated. Investigations in this laboratory have documented neuromagnetic abnormalities using auditory probe tasks in bipolar patients with a history of psychosis vs. those without such history. This suggests the possibility to differentiate brain variables related to psychosis from those related to the mental illness per se. The investigators now propose to study 30 subjects with bipolar disorder and a history of psychosis, 30 bipolar subjects with no history of psychosis, and 30 controls (15 males in each group). Magnetic source imaging of auditory (M100 generated in Heschl's gyrus or continuous planum temporale) and somatosensory (M50 generated in 3b of postcentral gyrus). MRI data from these subjects will examine, identify and quantify the source of these MEG signals to assess possible cortical reorganization as an index of psychosis. The hypothesis is that subjects with a history of psychosis will demonstrate specific abnormalities on functional and structural measures. Altered tototopy and somatotopy will be examined as antecedents or results of psychosis. The findings will help identify individuals at risk for illness, and separate disease and psychosis-associated brain changes in mental disorders.