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首页> 外文期刊>Behavioral neuroscience >Development of an 'Object Category Recognition' Task for Mice: Involvement of Muscarinic Acetylcholine Receptors
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Development of an 'Object Category Recognition' Task for Mice: Involvement of Muscarinic Acetylcholine Receptors

机译:开发小鼠“对象类别识别”任务:毒蕈碱乙酰胆碱受体的参与

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摘要

Recent research suggests that rats are capable of object categorization-like processes. To study whether mice possess similar abilities, we developed a spontaneous one-trial object category recognition (OCR) task. Based on the spontaneous object recognition paradigm, mice discriminated between two otherwise equally novel objects, one from a novel category and one from a studied category. During the sample phase, mice were exposed to two different exemplars from the same category. After a retention delay, they explored a third (i.e., novel) object from that sampled category and an object from a novel category in a choice phase. Mice preferentially explored the novel category object, taken as an index of category recognition, in this OCR task when a 30-min retention delay was used. Extensive preexposure to category exemplar objects also enhanced subsequent task performance across a longer (1-h) retention delay at which mice without preexposure did not demonstrate evidence for category recognition. Prechoice administration of the acetylcholine muscarinic receptor antagonist, scopolamine, disrupted OCR performance with or without preexposure, implicating acetylcholine in category recognition. The current study presents a valuable new rodent task for the study of the mechanistic basis of categorization-like processes and its potential relevance to common cognitive disorders.
机译:最近的研究表明,大鼠能够对象分类的过程。为了研究小鼠是否具有类似的能力,我们开发了一种自发的单试对象类别识别(OCR)任务。基于自发性对象识别范式,小鼠在另外两个新颖的对象之间区分,其中一个来自新型类别和来自研究的类别。在样品阶段期间,小鼠从相同类别暴露于两个不同的示例。在保留延迟之后,他们探索了来自选择阶段的采样类别的第三个(即,新颖)对象和来自新型类别的对象。小鼠优先探索了新型类别对象,作为类别识别指标,在使用30分钟的保留延迟时,在该OCR任务中。广泛的PreSXPosure对类别示例性对象还增强了跨越更长(1小时)保留延迟的后续任务性能,在没有预先绘制的小鼠没有证明类别识别的证据。预先授予乙酰胆碱毒蕈碱受体拮抗剂,COLOPONAMINE,中断OCR性能或不具有预先筛选,暗示类别识别中的乙酰胆碱。目前的研究呈现了一个有价值的新啮齿动物任务,用于研究分类的类别的机械基础及其与普通认知障碍的潜在相关性。

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