一个配置上下文信号同时但可分离地驱动海马位置场的定位和方向
Han Yin Cheng1, Dorothy W Overington1, Kate J Jeffery1,2
1Institute of Behavioural Neuroscience, Division of Psychology & Language Sciences, University College London, London, UK.
Hippocampus
|December 2, 2023
概括
大脑通过位置细胞来解决环境的模两可,这些细胞在对称的环境中保持稳定的射场,有时与气味线索脱. 一个新的模型通过整合布局,头部方向和气味信息来解释这一点.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
背景情况:
- 有效的自我定位依赖于大脑从环境对称度解决感官模两可.
- 海马中的位置细胞对于空间导航和记忆至关重要.
研究的目的:
- 为了研究海马的位置细胞如何在旋转对称的环境中解决模糊性.
- 了解环境线索的作用,特别是气味,在细胞发射模式中的作用.
主要方法:
- 来自海马CA1位置细胞的记录在研究一个旋转对称的"2-盒"装置的老鼠中.
- "2-box"具有相同的隔间,对立的布局和独特的气味背景 (与香草).
主要成果:
- 没有地方细胞旋转他们的领域,尽管环境对称.
- 大多数位置细胞在盒子之间重新映射;一些重复的字段,显示气味条件转换对称性.
- 位置细胞组合通常保持相对于气味线索的方向,但有时会独立旋转.
结论:
- 一个新的模型提出了气味,布局和头部方向线索之间的三向关联,用于场地方向和定位.
- 这种配置上下文信号允许稳定的空间表示,并解释了组合脱离气味线索的解.
- 后皮质是这些集成上下文计算的潜在网站.
关键词:
形态学习 (configural learning) 是一种学习方式.语境 语境 语境 语境 语境头部方向的细胞是指头部方向的细胞.在海马体内,海马体位置细胞 细胞 位置细胞空间认知 空间认知更多相关视频
09:59Implantation of Chronic Silicon Probes and Recording of Hippocampal Place Cells in an Enriched Treadmill Apparatus
Published on: October 11, 2017
12.7K
08:37A Video Demonstration of Preserved Piloting by Scent Tracking but Impaired Dead Reckoning After Fimbria-Fornix Lesions in the Rat
Published on: April 24, 2009
11.9K
相关概念视频
01:19Role of Hippocampus in Memory
267
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
267
01:30Diencephalon: Anatomical Regions
2.1K
The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
2.1K