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低成本小鼠新颖物体识别和物体位置行为测试

Novel Object Recognition and Object Location Behavioral Testing in Mice on a Budget.

作者信息

Denninger Jiyeon K, Smith Bryon M, Kirby Elizabeth D

机构信息

Department of Psychology, Ohio State University.

Department of Psychology, Ohio State University; Department of Neuroscience, Ohio State University; Center for Chronic Brain Injury, Ohio State University;

出版信息

J Vis Exp. 2018 Nov 20(141). doi: 10.3791/58593.

Abstract

Ethologically relevant behavioral testing is a critical component of any study that uses mouse models to study the cognitive effects of various physiological or pathological changes. The object location task (OLT) and the novel object recognition task (NORT) are two effective behavioral tasks commonly used to reveal the function and relative health of specific brain regions involved in memory. While both of these tests exploit the inherent preference of mice for the novelty to reveal memory for previously encountered objects, the OLT primarily evaluates spatial learning, which relies heavily on hippocampal activity. The NORT, in contrast, evaluates non-spatial learning of object identity, which relies on multiple brain regions. Both tasks require an open-field-testing arena, objects with equivalent intrinsic value to mice, appropriate environmental cues, and video recording equipment and the software. Commercially available systems, while convenient, can be costly. This manuscript details a simple, cost-effective method for building the arenas and setting up the equipment necessary to perform the OLT and NORT. Furthermore, the manuscript describes an efficient testing protocol that incorporates both OLT and NORT and provides typical methods for data acquisition and analysis, as well as representative results. Successful completion of these tests can provide valuable insight into the memory function of various mouse model systems and appraise the underlying neural regions that support these functions.

摘要

行为学相关的行为测试是任何使用小鼠模型研究各种生理或病理变化的认知影响的研究的关键组成部分。物体位置任务(OLT)和新物体识别任务(NORT)是两种常用的有效行为任务,用于揭示参与记忆的特定脑区的功能和相对健康状况。虽然这两种测试都利用小鼠对新奇事物的固有偏好来揭示对先前遇到的物体的记忆,但OLT主要评估空间学习,这严重依赖海马体活动。相比之下,NORT评估物体身份的非空间学习,这依赖于多个脑区。这两种任务都需要一个旷场测试场地、对小鼠具有同等内在价值的物体、适当的环境线索以及视频记录设备和软件。市售系统虽然方便,但成本可能很高。本手稿详细介绍了一种简单、经济高效的方法,用于构建场地和设置执行OLT和NORT所需的设备。此外,手稿描述了一种高效的测试方案,该方案结合了OLT和NORT,并提供了数据采集和分析的典型方法以及代表性结果。成功完成这些测试可以为各种小鼠模型系统的记忆功能提供有价值的见解,并评估支持这些功能的潜在神经区域。

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