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関連する概念動画

Association Areas of the Cortex01:21

Association Areas of the Cortex

6.8K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
6.8K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

5.1K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
1.2K
Lobes of the Cerebrum01:22

Lobes of the Cerebrum

2.1K
The cerebral cortex, a critical structure of the brain, is intricately divided into two hemispheres, each consisting of four distinct lobes: occipital, temporal, frontal, and parietal. These lobes function cooperatively to regulate various cognitive and sensory functions, forming the basis of our complex neural capabilities.
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements....
2.1K
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

650
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
650
Azimuths and Bearings01:19

Azimuths and Bearings

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Azimuths and bearings are essential concepts in surveying, providing methods to express the direction of a line relative to a meridian. Azimuths refer to the clockwise angle measured from the north end of a reference meridian to the given line, ranging from zero to 360 degrees. This method gives a comprehensive directional reference within a full 360-degree circle, making it a straightforward way to communicate direction in various fields, including navigation, cartography, and...
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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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軌道前頭皮質は 将来の航海目標の地図を作成します

Raunak Basu1, Robert Gebauer2, Tim Herfurth2

  • 1Max Planck Institute for Brain Research, Frankfurt am Main, Germany. raunak.basu@brain.mgp.de.

Nature
|October 28, 2021
PubMed
まとめ
この要約は機械生成です。

ネズミの軌道前頭皮質 (OFC) のニューロンは 航海目標に一貫して指し示す 空間地図を作成します この脳の領域は 感覚知覚を超えた 精密なナビゲーションに不可欠です

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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
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Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation
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関連する実験動画

Last Updated: Oct 15, 2025

Modeling the Functional Network for Spatial Navigation in the Human Brain
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Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
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Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation
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科学分野:

  • 神経科学
  • 認知科学
  • 行動科学

背景:

  • 正確なナビゲーションは,継続的な空間的関係推定に依存しています.
  • ナビゲーション中の目的地決定における海馬の神経細胞の役割は議論されている.
  • 脳がアクティブな探索中に 標的の位置を正確に推定するかどうかは不明です

研究 の 目的:

  • 精密な目標指向ナビゲーションの基礎にある神経機構を調査する.
  • 未来の航海目的地を 特定する
  • 空間ナビゲーションにおける軌道前皮質 (OFC) の機能を研究する.

主な方法:

  • ネズミの軌道前皮質 (OFC) の神経活動を記録する.
  • 目標表現に関連するニューラルアンサンブルダイナミクスを分析する.
  • OFCの活動を妨害し,ナビゲーション行動への影響を観察する.

主要な成果:

  • OFCニューロンが発見され 空間的表象が形成され 動物の目的地が示されます
  • 観測された目的地コードは,ナビゲーションの開始前に,感覚目標へのアクセスなしで出現します.
  • OFCの活動は 航海エラーが起こる前に 予測することがわかりました
  • 航行開始時に OFC 活動を妨害すると,航行エラーが発生することが示されています.

結論:

  • オービトフロントアル皮質 (OFC) は脳の内部のゴールマップに不可欠です
  • OFCのニューラル・アンサンブルは,航行に不可欠な目的地特有の表現を維持します.
  • OFCは,センサーの範囲外であっても,選択された目的地への正確なナビゲーションを可能にします.