NEUROPHYSIOLOGY DATABASE OF INBRED MUTANT STRAINS

近交系小鼠特定基因突变的神经感觉评估是大脑和行为遗传分析的重要组成部分，也是评估药物治疗反应的关键工具。该项目的具体目标是开发和实施快速、高通量的电生理学调查方法和一个开放的电子参考数据库，其中包含对近交系和突变体的标准化神经生理学评估，包括清醒和行为小鼠的表面皮质脑电、深度记录的海马脑电、视觉诱发电位和脑干听觉诱发电位。具体目标包括：1)技术部分，包括开发更轻、更高电极密度的硬膜外和深度电极阵列，用于慢性植入。目前的技术将通过实施非创伤性、灵活的零插入力微连接器和经过校准的特定区域放置而得到加强。电生理数据将以数字方式获取，结合分屏数字视频，并将实施在互联网上快速显示和在线共享的程序。2)定量数据分析部分，包括应用自发皮层脑电和平均诱发电位的频谱和拓扑分析对近交系进行分类。3)表型筛选标准部分：将进行多参数研究，以评估与昼夜节律、一天中的时间和重复采样有关的变异性；年龄和行为状态；以及技术人工制品的特征，以优化所有基础和诱发数据样本的可重复性和有效性。4)教学部分：所有技术将标准化，定量分析和筛选方法将充分详细，并传播给所有NIH突变中心和其他实验室采用。5)一个科学数据库和信息学部分：关于近交系的所有原始和分析数据的储存和检索将存放在一个开放的参考数据库中，可从互联网上的一个专门网站获取，并公布摘要结果。在验证之后，为个别研究人员筛选的特定突变的数据将在研究结束后不久经同意获得。来自多个中心的近交系和已定义突变的参考数据将在一个公共访问数据库中启动，允许实验室随后存储、检索甚至重新分析所有中心筛选的小鼠的参考数据。将创建与其他数据库的超链接。该项目将为用于近交系小鼠品系和已定义基因突变的比较电生理、行为和实验药理学的标准化数据提供框架。

Neurosensory evaluation of defined gene mutations in inbred strains of mice is an essential component of the genetic analysis of brain and behavior, and a critical tool in assessing responses to pharmacological treatment. The specific aims of this project are to develop and implement rapid, high-throughput electrophysiologic survey methods and an open electronic reference database containing standardized neurophysiological evaluation of inbred strains and mutants, including surface cortical EEG, depth-recorded hippocampal EEG, visual evoked potentials, and brainstem auditory evoked potentials, in awake and behaving mice. The specific aims include: 1) A technological component, involving development of lighter-weight, higher- electrode density epidural and depth electrode arrays for chronic implantation. Current techniques will be enhanced by implementation of non-traumatic, flexible zero-insertion force microconnectors and calibrated, region-specific placement. Electrophysiological data will be acquired digitally, combined with split-screen digital video, and programs to rapidly display and share online over the internet will be implemented. 2) A quantitative data analysis component, involving application of spectral and topological analysis of spontaneous electrocorticograms and averaged evoked potentials to catalog inbred strains. 3) A phenotypic screening standards component: Multi-parametric studies will be performed to assess variability related to diurnal rhythm, time of day, and repeated sampling; age and behavioral state; and characterization of technical artifacts in order to optimize reproducibility and validation of all basal and evoked data samples. 4) An instructional component: all technqiues will be standardized and methods for quantitative analysis and screening will be fully detailed and disseminated for adoption by all NIH mutagenesis centers and other laboratories. 5) A scientific database and informatics component: Storage and retrieval of all raw and analyzed data on inbred strains will be deposited in an open reference database accessible from a dedicated website over the Internet, and summary results published. Following validation, data on specific mutants screened for individual investigators will be available by consent shortly after study. The reference data on inbred strains and defined mutants from multiple centers will be initiated in a common access database, allowing laboratories to subsequently deposit, retrieve, and even reanalyze reference data from mice screened by all centers. Hyperlinks will be created with other databases. This project will provide the framework for normative data to be used for comparative electrophysiological, behavioral and experimental pharmacology on inbred mouse strains and defined gene mutations.