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。309Please respect copyright.PENANADoUYDLNJfl
309Please respect copyright.PENANAVjxIVsD9eU
309Please respect copyright.PENANAmovNqrN9QQ
(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)。309Please respect copyright.PENANABd49nZfnab
309Please respect copyright.PENANA0rPrc7etk6
309Please respect copyright.PENANAvZXs0NZ3Pl
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。309Please respect copyright.PENANA5YyPwqGMb5
309Please respect copyright.PENANAD6URdSWVyZ
309Please respect copyright.PENANAq3dNKbFviJ
(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。309Please respect copyright.PENANAVyk7gasSF6
309Please respect copyright.PENANA7KnGOPrhCM
309Please respect copyright.PENANAVBxvXf2VgQ
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。309Please respect copyright.PENANAgpWX4uD5N5
309Please respect copyright.PENANAzyFmXVVOoA
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。309Please respect copyright.PENANAEIFAORO9ez
309Please respect copyright.PENANAbvuT7MHGFk
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。309Please respect copyright.PENANA36VRY0OXLw
309Please respect copyright.PENANAGSwe2DvjfQ
影片:https://www.youtube.com/watch?v=pV0SAKY5iTY309Please respect copyright.PENANAU9bLXgw4k2
309Please respect copyright.PENANAAT52TI20Cs
309Please respect copyright.PENANAKA60Hl6V5H
309Please respect copyright.PENANASQyjmcjXh3
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。309Please respect copyright.PENANAvXVjesT07M
309Please respect copyright.PENANAzr4sszx2M5
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/toc309Please respect copyright.PENANAbgfEEa64LX
309Please respect copyright.PENANAF0aBxfYosE
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。309Please respect copyright.PENANAB1W58f6mrh
309Please respect copyright.PENANAfZXNWZI3Dz
Link:309Please respect copyright.PENANArvyZW8DBmx
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio309Please respect copyright.PENANALDrO8cEg8u
309Please respect copyright.PENANAHO6IQSIFdC
309Please respect copyright.PENANAlrEbhjzsCI
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。309Please respect copyright.PENANA9CEkUuTset
309Please respect copyright.PENANABz0AThk3xU
Ref1:https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1009429309Please respect copyright.PENANA7ZCxXqaPm9