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相关概念视频

Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...

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相关实验视频

Updated: Jul 6, 2026

Measuring Active and Passive Tameness Separately in Mice
07:13

Measuring Active and Passive Tameness Separately in Mice

Published on: August 10, 2018

语音不动:实验和正常羊和山羊的敏感性差异.

A U MOORE, M S AMSTEY

    Science (New York, N.Y.)
    |March 2, 1962
    PubMed
    概括

    在寄养的羊羔和小孩中,不能诱导性不运动. 这表明,早期的生活经历,如不一致的母亲照顾,可以改变年轻动物的先天恐惧反应.

    科学领域:

    • 伦理学 伦理学 伦理学
    • 动物行为 动物行为
    • 发展心理学 发展心理学

    背景情况:

    • 性不运动是一种在许多动物物种中观察到的自然防御机制.
    • 这种行为,也被称为动物催眠,涉及到暂时的状态.
    • 对于动物福利和行为研究来说,了解影响强力不运动的因素至关重要.

    研究的目的:

    • 调查年轻寄养动物中强力不运动的诱导性.
    • 探索早期生活经历对先天性恐惧反应的潜在影响.
    • 为了确定母体护理的矛盾是否会影响强力不运动的发展.

    主要方法:

    • 一岁的养羊羔和小孩接受了强力不运动测试.
    • 用同一物种的对照动物进行比较.
    • 行为观察侧重于动物对固定试图的反应.

    主要成果:

    • 在寄养的羊羔和小孩身上,无法诱导性不运动.
    • 对照动物表现出特有的强力不动反应.
    • 寄养动物似乎缺乏正常的飞行距离,可能是由于不一致的护理相互作用.

    结论:

    关键词:
    运动障碍/实验性运动障碍

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    Intranasal Immunization and Milk Collection in Studies of Maternal Immunization in New Zealand White Rabbits (Oryctolagus cuniculus)
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    In Vivo Methods to Assess Retinal Ganglion Cell and Optic Nerve Function and Structure in Large Animals

    Published on: February 26, 2022

    • 早期的生活经历,特别是双重的母亲护理,可能会抑制强力不运动的发展.
    • 不一致的母亲互动可以破坏正常恐惧反应和飞行距离的形成.
    • 这些发现凸显了早期环境对先天性行为模式的重大影响.