For example, scientists were shocked to learn that about 90 percent of the fibers in the primary visceral nerve, the vagus, carry information from the gut to the brain and not the other way around.

比如说，科学家惊奇地发现主要肠内神经：迷走神经（the vagus），其90%的神经纤维，能准确把信息从肠道传递到大脑，而非反其道行之——“有一部分信息当然令人不快。”

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In summary, a variety of different mechanisms in brain gut axis, alone or in combination, may be responsible for visceral hypersensitivity.

总之，脑-肠轴上有多种机制单独或共同作用形成内脏感觉的异常。

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Including syphilis cause serious damage more visceral, can affect the heart, liver, kidney dirty, the brain and spinal cord, etc, thus showing symptoms is also very complicated.

其中梅毒引起内脏损害多而严重，可以影响心脏、肝脏、肾脏、大脑和脊髓等，因此表现出的症状也很复杂。

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