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。496Please respect copyright.PENANAUCEFIkov02496Please respect copyright.PENANAlxafkGcZ4i
496Please respect copyright.PENANAU7hZ6kz1go
(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)。496Please respect copyright.PENANAy4N7jkM6Pb496Please respect copyright.PENANAUB7LuNFf81
496Please respect copyright.PENANA1usTFu1Wqw
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。496Please respect copyright.PENANAKbnmgAYHUQ
496Please respect copyright.PENANAcRSr8QWn3J
496Please respect copyright.PENANA7FL8hnCtT9
(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。496Please respect copyright.PENANAQoXMPp9GuF496Please respect copyright.PENANAZjevoP0rl7
496Please respect copyright.PENANA2xc4x5vo4C
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。496Please respect copyright.PENANAcclGKNdwLv
496Please respect copyright.PENANA1oAz1nixz7
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。496Please respect copyright.PENANAxR0aiDuUpN
496Please respect copyright.PENANAa6xmzmUewC
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。496Please respect copyright.PENANA28YmsgDhMB
496Please respect copyright.PENANAYxkfuUptBC
影片:https://www.youtube.com/watch?v=pV0SAKY5iTY496Please respect copyright.PENANARmUHqmzRN4
496Please respect copyright.PENANA65qDiNR1Qm
496Please respect copyright.PENANALDhc5aOz0I
496Please respect copyright.PENANAJ3LJpCbLLb
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。496Please respect copyright.PENANA2OMzNkMkhf
496Please respect copyright.PENANAfMz4wvW6nH
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/toc496Please respect copyright.PENANAivH13XT6RB
496Please respect copyright.PENANA0pPWmOZpuU
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。496Please respect copyright.PENANAUR0xgLR4bk
496Please respect copyright.PENANAxHV0JV6cbG
Link:496Please respect copyright.PENANABF6qWpPnct
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio496Please respect copyright.PENANAIdZS2a1EoM
496Please respect copyright.PENANA0N2qzR7Quh
496Please respect copyright.PENANA0ZiyU2zOGo
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。496Please respect copyright.PENANAHWjyF0PqqR
496Please respect copyright.PENANAb739EtdoVg
Ref1:https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1009429496Please respect copyright.PENANAeumRRxtcFk