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関連する概念動画

Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

4.8K
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...
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Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

9.2K
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....
9.2K
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
3.5K
Reason and Intuition01:37

Reason and Intuition

7.7K
The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
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Decision Making01:20

Decision Making

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Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
Automatic decision-making is fast, intuitive, and relies on gut feelings...
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Diencephalon: Thalamus and Information Relay01:27

Diencephalon: Thalamus and Information Relay

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The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is  a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
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関連する実験動画

Updated: Apr 9, 2026

Corticospinal Excitability Modulation During Action Observation
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Corticospinal Excitability Modulation During Action Observation

Published on: December 31, 2013

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柔軟なセンソモーターの意思決定の過程で,皮質情報フローが流れる.

Markus Siegel1, Timothy J Buschman2, Earl K Miller3

  • 1Centre for Integrative Neuroscience and MEG Center, University of Tübingen, Tübingen, Germany. Picower Institute for Learning and Memory and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. markus.siegel@uni-tuebingen.de.

Science (New York, N.Y.)
|June 20, 2015
PubMed
まとめ
この要約は機械生成です。

柔軟な行動には,感覚の入力,タスク,選択を処理する脳の領域が含まれます. 新しい研究は,タスク情報の上から下への流れと,下から上への感覚の流れを明らかにし,前対対のネットワークを通じて感覚運動の選択を可能にします.

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Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
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Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy

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WheelCon: A Wheel Control-Based Gaming Platform for Studying Human Sensorimotor Control
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関連する実験動画

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Corticospinal Excitability Modulation During Action Observation
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Corticospinal Excitability Modulation During Action Observation

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Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy
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Multi-layer Cortical Ca2+ Imaging in Freely Moving Mice with Prism Probes and Miniaturized Fluorescence Microscopy

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科学分野:

  • 神経科学は神経科学である.
  • 認知神経科学とは
  • システム神経科学 システム神経科学

背景:

  • 柔軟な行動は,感覚入力,タスクの文脈,行動選択を含む多様な神経信号を統合することに依存しています.
  • 脳の異なる領域におけるこれらの信号のダイナミックな進化と相互作用は,まだ完全に理解されていません.

研究 の 目的:

  • 柔軟なセンソモーター行動中の感覚,タスク,選択の信号の時間的ダイナミクスとネットワークフローを調査する.
  • 適応的な意思決定を支援するために,情報がどのように処理され,複数の皮質領域に統合されるかを明らかにする.

主な方法:

  • 6つの皮質領域 (MT,V4,IT,LIP,PFC,FEF) から同時にニューロンの記録が,感覚報告のタスクを実行しているサルで記録されています.
  • ニューラル活動パターンの分析により,さまざまな種類の情報 (感覚,タスク,選択) の流れと進化を追跡します.

主要な成果:

  • 感覚情報の一時的なボトムアップのスイープが観察され,その後,フロントパリオテラルから視覚皮質へのタスク情報の持続的なトップダウンフローが観察されました.
  • 感覚情報は視覚領域から頭頂皮質と前頭前皮質に伝播する.
  • 選択に関連する信号は,前面対面領域で同時に発生し,前面目の領域と感覚皮質に投影されました.

結論:

  • 柔軟なセンソモーターの選択は,対極方向の流れを持つ情報ストリームを統合する前面対面ネットワークから生じる.
  • この発見は,認知の柔軟性と意思決定を支援する上で,上から下へ,そして下から上へ処理の複雑な相互作用を強調しています.