Once activated, the trigeminal nerve transmits pain signals.

一旦被激活，三叉神传递痛觉信号。

When you accidentally touch a hot stove or try to walk on a sprained ankle, special pain sensing nerves called nociceptors are triggered to send neuro messages up your spine and into your brain.

当你不小心触碰滚烫的炉灶或试图用扭的脚踝走路时，触发特殊的痛觉神，称感受器，以将神信息发送到你的脊椎并进入大脑。

Three things that you need for general anesthetic are you need amnesia so that they don't remember, analgesia so they have pain relief and then operating conditions for the surgeon.

记忆缺失，样就患者不记住手术过程；痛觉缺失，样可以缓解他们的疼痛；然后是外科医生所需的工作条件。

For example, if you step on a lego, the pain would be carried by the S1 nerve, but if you hit your big toe on a table leg, the pain would be carried by the L5 nerve.

例如，当你到乐高玩具时，痛觉就通过S1神传导，但如果你的拇趾撞到了桌子，痛觉是通过L5传导的。

This ischemia is thought to trigger release of adenosine, bradykinin, and other molecules that stimulate nerve fibers in the myocardium that result in the sensation of pain.

心内膜下缺血被认启动腺苷、缓激肽等分子的释放，些分子刺激心肌层神末梢，导致痛觉产生。

This results in a loss of sensations like pain, temperature, touch, as well as paralysis or loss of muscle function in some parts of the body.

导致感觉丧失（包括痛觉、温度觉、触觉）以及身体某些部位的肌肉瘫痪或功能丧失。

By then, researchers had already discovered that immune cells called macrophages probably contribute to endometriosis and that pain-sensing nerves are also involved.

那时，研究人员已发现， 被称巨噬细胞的免疫细胞可能与子宫内膜异位症有关， 痛觉神也参与其中。

And because your retinas don't have any pain receptors, your eyes have no way of warning you to stop.

而且因你的视网膜没有痛觉感受器，你的眼睛无法警告你停下来。

Sense of touch and pain, do something totally different and it wasn't known how they do it.

触觉和痛觉的作用是完全不同的，我们不知道它们是如何作用。

Posture can even influence your emotional state and your sensitivity to pain.

姿势甚至可以影响你的精神状态以及你对痛觉的敏感度。

I've always wondered how does my sense of pain compare to other people's sense of pain.

我一直想知道我的痛觉和别人的痛觉相比如何。

Skin sensations like touch, temperature, pain and pressure are carried to the spinal cord and then to the brain where we register the sensations.

皮肤感觉，如触觉、温度觉、痛觉与压力觉等，由上述神传递至脊髓，最后到大脑，使我们能感知到。

When the corticospinal tract is affected, a person will have problems with voluntary movement, and when the spinothalamic tract is damaged, a person will have problems sensing pain.

当皮质脊髓束受损时，患者有随意运动障碍；当脊髓丘脑束受损时，患者有痛觉丧失。

During a migraine, this pain pathway becomes sensitized, meaning the threshold for provoking pain is lowered.

当偏头痛发作时，个痛觉通路变得敏感化，意思是能触发痛觉的阈值下降了。

The lateral tract carries sensory information for pain, pressure and temperature, while the anterior tract carries information for crude touch, or the sense one has been touched, without being able to localize where they were touched.

脊髓丘脑侧束携带痛觉、压力觉和温度觉信息，2.脊髓丘脑前束携带粗触觉信息，即只是一种得知被触摸过，却无法定位被触摸部位的感觉。

The result is paralysis and loss of proprioception on the same side as the injury or lesion, and loss of pain and temperature sensation on the opposite side of the lesion.

从而导致损或病变同侧的瘫痪和本体感觉丧失，和病变对侧的痛觉和温度觉的丧失。

The lateral tract carries sensory information for pain and temperature, while the anterior tract carries information for pressure and crude touch or the sense one has been touched, but without being able to localize where they were touched.

侧束携带的感觉信息包括痛觉和温度觉，前束携带的感觉信息则包括压力觉和粗触觉，粗触觉指只感受到被触摸而无法定位的触觉。

So, damage to the right spinothalamic tracts will cause loss of pain, temperature and crude touch sensation from the opposite or left side, beginning one or two segments below the lesion.

所以，右侧脊髓丘脑束的损导致左侧的痛觉、温度觉以及粗触觉的缺失，在病变平面1或2个脊髓节段以下。

And we have a higher pain tolerance.

而且我们有更高的痛觉阈值。

So we get hypersensitivity of our nociceptors, which is our pain receptors.

于是，我们的感受器——即痛觉感受器——变得过度敏感。