Adult neurogenesis in the hippocampal dentate gyrus affects sparsely synchronized rhythms, associated with pattern separation and integration

IF 3.1 3区 工程技术 Q2 NEUROSCIENCES
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Abstract

We are concerned about sparsely synchronized rhythms (SSRs), associated with diverse cognitive functions, in the hippocampal dentate gyrus. Distinctly, adult-born immature GCs (imGCs) emerge through neurogenesis, in addition to the mature granule cells (mGCs) (emerged in the developmental stage). In prior work, these mGCs and imGCs were found to exhibit their distinct roles in pattern separation and integration for encoding cortical inputs, respectively. But, the underlying dynamical mechanismremains unclear. In this paper, we first study influence of the young adult-born imGCs on emergence of SSRs in the populations of the mGCs and the imGCs; population and individual firing behaviors in the SSRs are intensively studied. We then examine how the SSRs play a role in the underlying mechanism for pattern separation and integration. Particularly, quantitative relationship between SSRs of the mGCs and the imGCs and their pattern separation and integration is investigated.

海马齿状回的成年神经发生影响稀疏同步节律,与模式分离和整合有关
摘要 我们关注海马齿状回中与多种认知功能相关的稀疏同步节律(SSR)。除了在发育阶段出现的成熟颗粒细胞(mGCs)外,还通过神经发生出现了成人出生的未成熟颗粒细胞(imGCs)。在之前的研究中,这些 mGCs 和 imGCs 被发现在编码皮层输入的模式分离和整合中分别扮演着不同的角色。但是,其背后的动态机制仍不清楚。在本文中,我们首先研究了青壮年出生的 imGCs 对 mGCs 和 imGCs 群体中出现 SSR 的影响,并深入研究了 SSR 的群体和个体点火行为。然后,我们研究了 SSR 在模式分离和整合的基本机制中是如何发挥作用的。特别是,我们研究了 mGCs 和 imGCs 的 SSR 与模式分离和整合之间的定量关系。
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来源期刊
Cognitive Neurodynamics
Cognitive Neurodynamics 医学-神经科学
CiteScore
6.90
自引率
18.90%
发文量
140
审稿时长
12 months
期刊介绍: Cognitive Neurodynamics provides a unique forum of communication and cooperation for scientists and engineers working in the field of cognitive neurodynamics, intelligent science and applications, bridging the gap between theory and application, without any preference for pure theoretical, experimental or computational models. The emphasis is to publish original models of cognitive neurodynamics, novel computational theories and experimental results. In particular, intelligent science inspired by cognitive neuroscience and neurodynamics is also very welcome. The scope of Cognitive Neurodynamics covers cognitive neuroscience, neural computation based on dynamics, computer science, intelligent science as well as their interdisciplinary applications in the natural and engineering sciences. Papers that are appropriate for non-specialist readers are encouraged. 1. There is no page limit for manuscripts submitted to Cognitive Neurodynamics. Research papers should clearly represent an important advance of especially broad interest to researchers and technologists in neuroscience, biophysics, BCI, neural computer and intelligent robotics. 2. Cognitive Neurodynamics also welcomes brief communications: short papers reporting results that are of genuinely broad interest but that for one reason and another do not make a sufficiently complete story to justify a full article publication. Brief Communications should consist of approximately four manuscript pages. 3. Cognitive Neurodynamics publishes review articles in which a specific field is reviewed through an exhaustive literature survey. There are no restrictions on the number of pages. Review articles are usually invited, but submitted reviews will also be considered.
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