每日背誦第一期15
The part of the brain that is associated with tickling is the cerebellum. It monitors our movements, but ignores movements not perceived as a threat. For example, we do not notice our vocal chords moving when we speak, but we may jump if someone touches us on the shoulder. This selective perception is probably the reason why we cannot tickle ourselves.
腦部與怕癢有關(guān)的部位是小腦。小腦監(jiān)控我們的一舉一動(dòng)，但對(duì)其認(rèn)為不具威脅性的活動(dòng)，往往會(huì)忽視。舉例來(lái)說(shuō)，我們說(shuō)話(huà)時(shí)不會(huì)察覺(jué)聲帶的振動(dòng)，但是如有人觸摸我們的肩膀時(shí)，我們可能會(huì)嚇一跳。這種選擇性的知覺(jué)或許就是我們無(wú)法自己哈癢的原因。
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