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相关概念视频

Olfaction01:25

Olfaction

50.0K
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...
50.0K
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

2.1K
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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相关实验视频

Updated: Apr 8, 2026

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex
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Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

Published on: March 28, 2012

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河马重新绘制和网格调整在内腔皮层的内腔皮层.

Marianne Fyhn1, Torkel Hafting, Alessandro Treves

  • 1Centre for the Biology of Memory, Norwegian University of Science and Technology, NO-7489 Trondheim, Norway.

Nature
|February 27, 2007
PubMed
概括

海马的位置细胞使用重新映射来区分环境. 中部内耳皮层的网格细胞预测重新映射类型,坐标移位表示全球重新映射,稳定场表示速率重新映射.

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:

  • 关联式记忆网络需要对重叠的输入进行脱关系.
  • 海马的位置细胞通过重新映射表现出神经元模式分离.
  • 重制映射表现为速率重制映射 (稳定的地点代码) 或全球重制映射 (独立的地点和速率代码).

研究的目的:

  • 为了研究介质内耳皮层 (MEC) 网格细胞在海马体重绘中的作用.
  • 为了确定MEC组合动态是否预测海马体重绘的类型.

主要方法:

  • 在MEC的位置选择性网格单元中分析集体动态.
  • 网格细胞活动与海马速率和全球重新映射的相关性.

主要成果:

  • MEC电网细胞组合的动态预测了海马体的重组.
  • 速率重新映射与稳定的MEC网格字段相关.
  • 全球重新映射伴随着坐标转移和MEC电网单元发射顶点的协调旋转.

结论:

  • MEC网格细胞为海马重新绘制提供了一个预测信号.

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Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury
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Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury

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Dual Electrophysiological Recordings of Synaptically-evoked Astroglial and Neuronal Responses in Acute Hippocampal Slices
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Dual Electrophysiological Recordings of Synaptically-evoked Astroglial and Neuronal Responses in Acute Hippocampal Slices

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相关实验视频

Last Updated: Apr 8, 2026

Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex
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Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex

Published on: March 28, 2012

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Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury
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Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury

Published on: November 19, 2012

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Dual Electrophysiological Recordings of Synaptically-evoked Astroglial and Neuronal Responses in Acute Hippocampal Slices
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Dual Electrophysiological Recordings of Synaptically-evoked Astroglial and Neuronal Responses in Acute Hippocampal Slices

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  • 当地MEC网格单元组合在各种环境中保持恒定的空间相结构.
  • 这种保存结构有助于通过翻译实现一致的位置表示和更新.