首页> 美国卫生研究院文献>eLife >Opposite regulation of inhibition by adult-born granule cells during implicit versus explicit olfactory learning
【2h】

Opposite regulation of inhibition by adult-born granule cells during implicit versus explicit olfactory learning

机译:内隐与外显嗅觉学习过程中成年颗粒细胞抑制作用的相反调节

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Both passive exposure and active learning through reinforcement enhance fine sensory discrimination abilities. In the olfactory system, this enhancement is thought to occur partially through the integration of adult-born inhibitory interneurons resulting in a refinement of the representation of overlapping odorants. Here, we identify in mice a novel and unexpected dissociation between passive and active learning at the level of adult-born granule cells. Specifically, while both passive and active learning processes augment neurogenesis, adult-born cells differ in their morphology, functional coupling and thus their impact on olfactory bulb output. Morphological analysis, optogenetic stimulation of adult-born neurons and mitral cell recordings revealed that passive learning induces increased inhibitory action by adult-born neurons, probably resulting in more sparse and thus less overlapping odor representations. Conversely, after active learning inhibitory action is found to be diminished due to reduced connectivity. In this case, strengthened odor response might underlie enhanced discriminability.
机译:通过强化的被动接触和主动学习都可以增强精细的感官辨别能力。在嗅觉系统中,这种增强被认为是部分通过成人出生的抑制性中间神经元的整合而发生的,从而导致重叠的增香剂的表示得到改善。在这里,我们在小鼠中鉴定了成年颗粒细胞水平上被动学习与主动学习之间的新型和意料之外的分离。具体来说,虽然被动学习和主动学习过程都可以促进神经发生,但成年细胞的形态,功能耦合以及嗅球输出的影响却有所不同。形态分析,成年神经元的光遗传学刺激和二尖瓣细胞记录显示,被动学习诱导成年神经元的抑制作用增强,可能导致稀疏,从而减少了重叠的气味表示。相反,在主动学习后,由于连接性降低,抑制作用减弱。在这种情况下,增强的气味响应可能是增强可辨别性的基础。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号