This reply
murmur mark this message contains misinformation
originally written by murmur
手指動作不僅牽涉到大腦,還包括關節、韌帶等,因此是無法透過簡單的手指動作檢測出大腦是否有萎縮,仍需到醫院透過精密檢查才能確認。

References

MyGoPen查證參考:
https://www.mygopen.com/2020/12/brain-finger.html

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