Once activated, the trigeminal nerve transmits pain signals.

一旦被激活，三叉神经会传递痛觉。

During the headache phase, the trigeminal nerve plays a key role.

头痛阶段，三叉神经起到了关键作用。

Maybe the trigeminal nerve is less sensitive in certain demographics.

也许一些人口中，他们的三叉神经没有那么敏感。

Most commonly, the virus establishes a latent state within the trigeminal ganglia and the dorsal ganglia.

一般情况下，病毒会三叉神经节和背神经节维持潜伏态。

A specific cranial nerve, cranial nerve V, is the trigeminal nerve and it’s responsible for the sensation in the face.

举例来说，第五对脑神经三叉神经负责面部的感觉。

The sensory neurons of the face have their cell bodies in the trigeminal nuclei and those around the genitalia are located in the sacral nuclei.

面部感觉神经元的胞体位于三叉神经核内，生殖器周围神经元的胞体位于骶核内。

Now, the trigeminal nerve is a natural part of the body, so if it's the real cause of brain freeze then that means everyone should get it.

三叉神经天生们的人体结构中，所以如果它真的是造成冰淇淋头痛的原因，那意味着应该每个人都会有。

Its sensory neurons create a nerve cell cluster called trigeminal ganglion, located in the bones on the side of the face between the eyes and ears.

它的感觉神经元组成了一组神经细胞簇，叫做三叉神经节，位于两侧眼与耳中间的骨骼中。

Since the trigeminal and sacral nuclei serve just one side of the face or body, herpes vesicles and ulcers develop on the ipsilateral or same side as the affected nuclei.

因为三叉神经核和骶神经核只支配脸部或身体的一侧，所以，疱疹和溃疡也发生被感染的神经核的同侧。

In one small study, 93% of migraine patients were also prone to brain freeze, which has led researchers to suspect that the trigeminal nerve also plays a key role in migraines.

一个小型研究中，93%的偏头痛患者也会发生冰淇淋头痛。研究者猜测偏头痛是否与三叉神经痛也有重要联系。

The trigeminal nerve normally transmits touch, temperature, and other sensations from the skin to most of the face, part of the scalp, and some of the blood vessels and layers covering the cerebral cortex.

三叉神经一般会传递来自大部分脸部皮肤、部分头皮、以及覆盖大脑皮层的一些血管和膜层的触觉、温度和其它感觉。

Alright, as a quick recap, most of the time, herpes simplex virus 1 and 2 cause asymptomatic latent infections that set up in the trigeminal and sacral nuclei for life, but sometimes they can cause symptoms like recurrent oral and genital lesions.

得！快速回顾一下：大多数情况下，单纯疱疹病毒1型和2型引起无症的潜伏感染，病毒三叉神经核和骶神经核中寄居，但有时也会引起复发性的口腔和生殖器病变。