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関連する概念動画

Somatosensation01:33

Somatosensation

37.0K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
37.0K
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

8.1K
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....
8.1K
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

9.9K
Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
9.9K
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

3.2K
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...
3.2K
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

5.6K
The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
5.6K
Introduction to Special Senses01:26

Introduction to Special Senses

6.8K
Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
6.8K

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関連する実験動画

Updated: May 5, 2026

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
07:28

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

6.8K

モーターの変動のための感覚源である.

Leslie C Osborne1, Stephen G Lisberger, William Bialek

  • 1Sloan-Swartz Center for Theoretical Neurobiology, W. M. Keck Foundation Center for Integrative Neuroscience, Department of Physiology, University of California at San Francisco, San Francisco, California 94143-0444, USA. osborne@phy.ucsf.edu

Nature
|September 16, 2005
PubMed
まとめ
この要約は機械生成です。

運動の変動性は,感覚的推定の誤りから生じるもので,エンジンノイズや意図の変動から生じるものではない. 最適なパフォーマンスは,霊長類の眼の動きで見られるように,正確なモーター出力の正確な感覚入力に依存しています.

さらに関連する動画

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
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The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task

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Author Spotlight: Combined Peripheral Nerve Stimulation and Controllable Pulse Parameter Transcranial Magnetic Stimulation to Probe Sensorimotor Control and Learning
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Author Spotlight: Combined Peripheral Nerve Stimulation and Controllable Pulse Parameter Transcranial Magnetic Stimulation to Probe Sensorimotor Control and Learning

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関連する実験動画

Last Updated: May 5, 2026

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli
07:28

A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli

Published on: August 2, 2016

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The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
10:39

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task

Published on: May 3, 2018

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Author Spotlight: Combined Peripheral Nerve Stimulation and Controllable Pulse Parameter Transcranial Magnetic Stimulation to Probe Sensorimotor Control and Learning
14:47

Author Spotlight: Combined Peripheral Nerve Stimulation and Controllable Pulse Parameter Transcranial Magnetic Stimulation to Probe Sensorimotor Control and Learning

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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
  • 感覚的知覚 感覚的知覚について

背景:

  • 運動の変動は,しばしば運動システムや認知プロセスにおける内部ノイズに起因する.
  • 別の仮説は,行動に不可欠な外部パラメータの感覚的推定の不正確性から変動が生じると示唆している.
  • 変動の源を理解することは,特に精度が高いタスクでは,モーターパフォーマンスを最適化するための鍵です.

研究 の 目的:

  • 視覚的に導かれた滑らかな追及眼運動の変動の主な原因は,感覚的推定誤差であるかどうかを調査する.
  • モーターの出力精度は,センサー入力品質によって制限され,計画と実行中に追加的なノイズが導入されないという仮説を検証する.
  • 推論された感覚エラーの大きさを,知覚的差別の値と比較する.

主な方法:

  • 実験モデルとして,霊長類の視覚的に誘導されたスムーズ・プースート・アイ・ムーブメントを利用した.
  • 目の軌道の変動を分析するために,同一の標的の動きを繰り返し提示した.
  • 目の動きの差異を定量化し,それを特定の感覚的推定誤差 (速度,方向,タイミング) と背景の騒音と関連付けました.

主要な成果:

  • 目の軌道の差の92%近くは,ターゲット運動パラメータ (速度,方向,タイミング) の感覚的推定の誤差によって説明されました.
  • 眼の動きと固定の両方で,少量の背景音が観察されました.
  • 感覚エラーの推定大きさは,既定の感覚差別の値と相関しています.

結論:

  • 運動システムのノイズや意図の変動というより,感覚的推定の誤差が,このタスクにおける運動の変動の主な原因です.
  • モーターシステムの性能は,感覚情報の質を正確に反映したときに最適化されます.
  • 認識と行動の基礎となる神経プロセスは,共通のノイズ制限を共有しており,統合された感覚運動処理を示唆しています.