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関連する概念動画

Pain01:20

Pain

618
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
618
Nociception01:44

Nociception

29.3K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
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Analgesia and Pain Management01:25

Analgesia and Pain Management

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
783
Perception01:28

Perception

558
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
558
Factors Affecting Perception01:25

Factors Affecting Perception

1.8K
Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

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Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
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Updated: Sep 4, 2025

Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli
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Multi-Modal Signals for Analyzing Pain Responses to Thermal and Electrical Stimuli

Published on: April 5, 2019

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痛みを解消する

Rohini Kuner1, Thomas Kuner2

  • 1Institute of Pharmacology, Heidelberg University, Heidelberg, Germany.

Science (New York, N.Y.)
|July 20, 2022
PubMed
まとめ
この要約は機械生成です。

科学者はマウスの脳の特定の回路を発見し 音に触れると痛みを和らげます この発見は 聴覚刺激が痛みの知覚を 変調する方法を 解明する新しい道を開きます

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科学分野:

  • 神経科学
  • 聴覚神経科学
  • 痛みに関する研究

背景:

  • 痛みの知覚は複雑なプロセスで 複数の脳領域が関わっています
  • 聴覚刺激は痛みの調節と関連付けられていますが,その背後にある神経メカニズムはほとんど不明です.
  • 音による鎮痛の 神経的基盤を理解することで 新しい治療目標が明らかになるかもしれません

研究 の 目的:

  • ネズミの脳における 音による鎮痛の原因となる神経回路を 特定するためです
  • 痛みの知覚における この回路の機能的役割を調査する

主な方法:

  • 特定の脳領域の 神経活動を操作するために 光遺伝学と化学遺伝学の技術を活用した.
  • ネズミの痛み反応を測定する行動分析を用いた.
  • in vivo 電気生理学を用いて神経活動を記録した.

主要な成果:

  • 聴覚刺激に反応して鎮痛を媒介する特定の神経回路が特定されました.
  • この回路の活性化により マウスの痛みの行動が著しく減少しました
  • この回路の阻害により 音による鎮痛が解消された.

結論:

  • ネズミの脳で音による鎮痛のための直接的な神経回路が特定されています.
  • この回路は,新しい非薬学的な痛み治療の開発の潜在的なターゲットです.
  • ヒトにおけるこれらの発見の翻訳の可能性を探るため,さらなる研究が必要である.