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相关概念视频

Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

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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...
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Olfaction01:25

Olfaction

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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
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Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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相关实验视频

Updated: Jan 17, 2026

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function
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Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

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协调的海马-内腔表达支持人类依赖于环境的空间导航.

Pengcheng Lv1,2, Dong Chen1,2, Chao Zhang3

  • 1State Key Laboratory of Cognitive Science and Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.

PLoS biology
|September 17, 2025
PubMed
概括

海马和脑内皮层的神经振荡在导航过程中追踪上下文和对象信息. 低频脑波 (2-8 Hz) 在这些区域之间同步,改善空间导航性能.

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Modeling the Functional Network for Spatial Navigation in the Human Brain
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Modeling the Functional Network for Spatial Navigation in the Human Brain

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A Video Demonstration of Preserved Piloting by Scent Tracking but Impaired Dead Reckoning After Fimbria-Fornix Lesions in the Rat
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A Video Demonstration of Preserved Piloting by Scent Tracking but Impaired Dead Reckoning After Fimbria-Fornix Lesions in the Rat

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相关实验视频

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Modeling the Functional Network for Spatial Navigation in the Human Brain
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Modeling the Functional Network for Spatial Navigation in the Human Brain

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 计算神经科学是一种神经科学.

背景情况:

  • 目标导向的行为需要整合上下文和对象信息.
  • 人类在空间导航中进行上下文处理的神经机制尚未得到充分理解.
  • 海马和脑内皮层对于空间记忆和导航至关重要.

研究的目的:

  • 在空间导航过程中调查上下文和对象表示的神经基础.
  • 为了探索神经振荡在海马-内腔内脉电路中的作用.
  • 在空间导航任务中将神经活动模式与行为表现联系起来.

主要方法:

  • 在31名患者身上记录了内脑电图 (iEEG).
  • 患者执行了取决于上下文的空间导航任务.
  • 分析的重点是海马体 (HC) 和脑内皮层 (EC) 中的振荡模式.

主要成果:

  • 在HC和EC中,不同的振荡模式分别代表了上下文和对象信息.
  • 神经表征的共变性预测了行为表现.
  • 低频振荡 (2-8 Hz) 在两种表示中都占主导地位.
  • 通过同步HC和EC之间的低频振荡,在EC中增强了对象表示.

结论:

  • 低频神经动力学对于在海马-内腔回路中表示上下文和对象信息至关重要.
  • 低频振荡的区域间同步支持上下文依赖的空间导航.
  • 这些发现阐明了复杂的导航行为背后的神经机制.