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。463Please respect copyright.PENANATXU8ZaASeB463Please respect copyright.PENANAwjD6L1PepW
463Please respect copyright.PENANAqrD6t8jlgL
(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)。463Please respect copyright.PENANALqhnYdVAAt463Please respect copyright.PENANAOXgFpHCLE1
463Please respect copyright.PENANAAdlXP5Ra7d
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。463Please respect copyright.PENANAQR7tnm6fyc
463Please respect copyright.PENANArA78QqSoII
463Please respect copyright.PENANAx188M837sM
(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。463Please respect copyright.PENANAvCSmejdoN8463Please respect copyright.PENANA6SDZqSE5fC
463Please respect copyright.PENANA6XH2AWylK5
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。463Please respect copyright.PENANAw9r83Jh3Hv
463Please respect copyright.PENANAsSsoFoOGf3
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。463Please respect copyright.PENANAqHNXXcQKPP
463Please respect copyright.PENANAOd7duxo3V2
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。463Please respect copyright.PENANA3akluHGNEh
463Please respect copyright.PENANAK1cgFp8mcs
影片:https://www.youtube.com/watch?v=pV0SAKY5iTY463Please respect copyright.PENANAikxclU7mLn
463Please respect copyright.PENANAQL4ZKAytjj
463Please respect copyright.PENANAD5GAVVbYWM
463Please respect copyright.PENANAF6IXPrd7rF
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。463Please respect copyright.PENANAOCjK9uf21Y
463Please respect copyright.PENANA8d9cB9aNRb
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/toc463Please respect copyright.PENANAStks0XWVOa
463Please respect copyright.PENANAHIpVsXMnw0
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。463Please respect copyright.PENANAOx1sHq16AT
463Please respect copyright.PENANAJ6dE6YXPhd
Link:463Please respect copyright.PENANABV3377BUU0
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio463Please respect copyright.PENANAS7nomOIF8h
463Please respect copyright.PENANAGimbJPctuR
463Please respect copyright.PENANAFocwHnsYTv
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。463Please respect copyright.PENANAhevqdTYuTn
463Please respect copyright.PENANASFaxOPjUON
Ref1:https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1009429463Please respect copyright.PENANAqTu4fplMl8