PLANUM TEMPORALE IN SCHIZOPHRENIA

精神分裂症的颞平面

• 批准号: 2250222
• 负责人: PATRICK E BARTA
• 金额: $ 10.92万
• 依托单位: JOHNS HOPKINS UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-05-01 至 1999-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2250222
• 关键词: age difference; cerebral dominance; gender difference; human subject; image processing; magnetic resonance imaging; neuroanatomy; phantom model; psychobiology; schizophrenia; socioeconomics; temporal lobe /cortex

The human brain is laterally asymmetric. Although anatomic structures on the left tend to resemble their homologous structure on the right, there are consistent and functionally important differences between them, particularly in the posterior temporal lobe areas involved in language processing. Postmortem and in-vitro imaging studies have reported several consistent left-right differences. The planum temporal (PT) is, on the average, larger on the left than the right. This surface is intimately related to Wernicke's region in the left posterior temporal lobe. Yet, because previous investigators used varying anatomical criteria for PT and different methods for measuring it, comparison between studies proves difficult,and no prior method seems ideal. Previous work suggests that the normal asymmetry of the PT may be altered in some schizophrenic patients' brains. There is increasing evidence that some cardinal symptoms of schizophrenia (hallucinations and though disorder) are associated with changes in the left temporal lobe, suggesting that the PT's changes may be related to schizophrenic symptoms. The proposed study aims to compare the contrast new and old MRI measures of the PT in normals. A second goal is to apply these measurements to the PTs of schizophrenic patients and carefully matched controls. Finally, based on previous findings, we hypothesize that the degrees of left-right asymmetry of the PT is likely to correlate with specified positive symptoms of schizophrenia. If this is true, it would further the understanding of the biological basis of the disorder, provide a possible marker for an identifiable subgroup of schizophrenia (which is probably a heterogeneous disorder), and suggest some connection between these symptoms and several other active areas within neuroscience research, particularly the study of language, gender differences, and structural and functional brain asymmetries.

人脑是横向不对称的。 虽然解剖结构 左边的结构往往类似于右边的同源结构， 它们之间存在一致且功能上重要的差异， 尤其是涉及语言的后颞叶区域 加工。 尸检和体外成像研究报告 一些一致的左右差异。 颞平面 (PT) 是， 平均而言，左侧比右侧大。 这个表面是 与左后颞部韦尼克区密切相关 叶。 然而，由于之前的研究人员使用了不同的解剖学 PT 的标准和不同的测量方法、比较 事实证明，研究之间的比较很困难，而且之前似乎没有一种理想的方法。 先前的研究表明 PT 的正常不对称性可能会改变 在一些精神分裂症患者的大脑中。 越来越多的证据 精神分裂症的一些主要症状（幻觉和尽管 紊乱）与左颞叶的变化有关， 提示PT的变化可能与精神分裂症有关 症状。 拟议的研究旨在比较新旧 MRI 测量的对比 正常情况下的 PT。 第二个目标是将这些测量结果应用到 精神分裂症患者和仔细匹配的对照组的 PT。 最后，根据之前的发现，我们假设 PT 的左右不对称可能与指定的相关 精神分裂症的阳性症状。 如果这是真的，那就更进一步了 了解该疾病的生物学基础，提供 精神分裂症可识别亚组的可能标记（即 可能是一种异质性疾病），并提出之间的某种联系 这些症状以及神经科学中的其他几个活跃领域 研究，特别是语言、性别差异和 大脑结构和功能不对称。