[請問] 流淚和笑在生物學上的意義
如題
我知道流眼淚基本上是保護眼睛角膜 眼淚有抗體 可以殺菌
但我想問的不是這個
而是人為什麼在很感動或很難過的時候 會"哭哭"
類似的情形 在某些感官刺激下 會"笑" 甚至笑到哭
其實不只是人類 其他動物像狗也會這種現象 (也許牠們有笑但人不知道)
我想知道在生物學上這種笑和哭的行為他有甚麼意義?
是不是哭過後可以減低難過? 那很感動會哭要做何解釋?
受到刺激後想笑卻憋住不笑真的會造成某種意義上的"內傷"?
這些跟生物歷史上的演化有相關嗎
因為只是閒閒想到這個問題本身非具有專業生物相關背景
所以請板友解答時可以盡量白話些 太專業的回答我怕我看不懂
謝謝 : )
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