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関連する概念動画

Functions of the Nervous System01:18

Functions of the Nervous System

The nervous system is responsible for coordinating and regulating the body's functions. It functions through three main processes: sensory, integrative, and motor processes. Sensory function involves the detection and transmission of information about internal and external stimuli from sensory receptors to the CNS. The CNS processes this information through an integrative function, where it interprets and makes decisions based on the incoming sensory information. Finally, the motor function...
Diencephalon: Thalamus and Information Relay01:27

Diencephalon: Thalamus and Information Relay

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 states or needs.
Brainstem01:19

Brainstem

The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
Spinal Cord: Information Processing01:10

Spinal Cord: Information Processing

The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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 posterior columns...
Spinal Cord01:26

Spinal Cord

The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.

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関連する実験動画

Updated: Jul 18, 2026

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication
08:47

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication

Published on: February 20, 2011

霊長類の脊髄内ニューロンは,運動前の指示された遅延活動を示す.

Y Prut1, E E Fetz

  • 1Department of Physiology & Biophysics and the Regional Primate Research Center, University of Washington, Seattle 98195, USA. yifat@u.washington.edu

Nature
|October 19, 1999
PubMed
まとめ

研究者らは,運動を実行する前に脊髄内ニューロンにおける予備的な神経活動を発見した. これは,脊髄内のプライミングと阻害の両方を含む広範な運動準備を示唆しています.

科学分野:

  • 神経科学は神経科学である.
  • モーター・コントロール・コントロール
  • 脊髄生理学 脊髄生理学

背景:

  • 指示された遅延期間の間,運動前の準備神経活動が脊髄上運動センターで知られている.
  • この活動は,運動パラメータと相関しているが,モーター出力の形成におけるその役割は不明である.

研究 の 目的:

  • 脊髄内ニューロンが予備的な遅延活動を示すかどうかを調査する.
  • この脊髄準備活動の性質と機能を理解するために.

主な方法:

  • 遅延運動タスク中の脊髄内ニューロンの電気生理学的記録.
  • 指示された遅延期間の神経活動の分析と,その後の動きの実行.

主要な成果:

  • 脊髄内ニューロンは,運動前の早期の遅延活動を示し,運動に関連する反応とは異なる.
  • この脊髄遅延活動は,脊髄上部の領域におけるセット関連活動に似ている.
  • 2つの脊髄プロセスが特定されました: 運動ネットワークのプライミングと重複した全局的阻害.

結論:

  • 運動準備は,脊髄を含む広範な領域で同時に起こります.

さらに関連する動画

Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks
11:31

Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks

Published on: December 5, 2014

Investigating Functional Regeneration in Organotypic Spinal Cord Co-cultures Grown on Multi-electrode Arrays
08:25

Investigating Functional Regeneration in Organotypic Spinal Cord Co-cultures Grown on Multi-electrode Arrays

Published on: September 23, 2015

関連する実験動画

Last Updated: Jul 18, 2026

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication
08:47

Spinal Cord Electrophysiology II: Extracellular Suction Electrode Fabrication

Published on: February 20, 2011

Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks
11:31

Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks

Published on: December 5, 2014

Investigating Functional Regeneration in Organotypic Spinal Cord Co-cultures Grown on Multi-electrode Arrays
08:25

Investigating Functional Regeneration in Organotypic Spinal Cord Co-cultures Grown on Multi-electrode Arrays

Published on: September 23, 2015

  • 脊髄の準備活動には,運動ネットワークのプライミングと筋肉の出力の抑制の両方が含まれます.
  • これは,運動実行の準備と制御における脊髄回路の二重の役割を強調しています.