早在1910年,有科學家去除貓隻脊髓連接大腦的某一段落(橙色位置) ,發現貓隻依然能夠勉強地步行,確立了步姿並非由大腦百分百主宰的理論。329Please respect copyright.PENANAE0Fu630SKC
329Please respect copyright.PENANAHyrG8ZqO8c
329Please respect copyright.PENANA3BJMgeWfYK
(圖2)後來經過一系列的證實,發現脊髓(Spinal cord)包含一系列的神經細胞,裡頭包含名為central pattern generator (CPG)的神經網路,負責協調我們的步姿(gait)。329Please respect copyright.PENANAGJ37vvgTff
329Please respect copyright.PENANArsBq48p8Cs
329Please respect copyright.PENANAYfa8A6qncH
動物的步姿因物種而異,例如袋鼠雙腿一同並行,兔仔慣常前腿左右互行,而後腿則一同並行。329Please respect copyright.PENANAYTvdTFFOSP
329Please respect copyright.PENANAdB92SmuFOL
329Please respect copyright.PENANAPnyuwvMgo1
(圖3)有一款兔仔的品種名為Sauteur d’Alfort,牠們不但不懂得跳躍,而且經常會做出前腿行走後腿提高的奇異舉動。329Please respect copyright.PENANANwYQBRoQZ8
329Please respect copyright.PENANAXOluQsHoys
329Please respect copyright.PENANA6vySJktesx
直到最近科學家才剖析得到箇中的因由,原因是該品種的兔仔出現RORB蛋白質變異,導致位於脊髓的神經細胞沒法能夠產生足夠的RORB蛋白質。329Please respect copyright.PENANAy1LvsZtiAr
329Please respect copyright.PENANAVMcdZXMDKs
含有RORB蛋白質的神經細胞相信是能夠避免神經訊息輸送時產生過激的功效。329Please respect copyright.PENANAE49w6u746K
329Please respect copyright.PENANAUq9fZp2uE2
而缺乏RORB蛋白質的兔仔大有可能是因為神經細胞所發出的指示不受控制,引致後腿肌肉伸展過激並因而提高的舉動。329Please respect copyright.PENANA9ozc4HXAkv
329Please respect copyright.PENANAuGqwOTiBck
影片:https://www.youtube.com/watch?v=pV0SAKY5iTY329Please respect copyright.PENANAZK7uBznon6
329Please respect copyright.PENANAp1RCpsYfey
329Please respect copyright.PENANAw4Z17fwM9S
329Please respect copyright.PENANAWWxMqL2QqO
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。329Please respect copyright.PENANAadvidPscAZ
329Please respect copyright.PENANAX5NvnDel6d
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc329Please respect copyright.PENANAg5GvHia8A0
329Please respect copyright.PENANAUtOaWOgR9X
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。329Please respect copyright.PENANAAtIas02sb7
329Please respect copyright.PENANAQgY4qR9U4G
Link:329Please respect copyright.PENANAWxJfVnMf5H
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio329Please respect copyright.PENANAyUBTGboZgu
329Please respect copyright.PENANA2OuTbFxK7q
329Please respect copyright.PENANAtTX5jluL5z
除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。329Please respect copyright.PENANAlTHItxPwRe
329Please respect copyright.PENANAjJqzs0qKWR
Ref1:https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1009429329Please respect copyright.PENANAYGySFVvHQn