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。557Please respect copyright.PENANA319p3J9Wlp557Please respect copyright.PENANAm1JM9FDHU2
557Please respect copyright.PENANApR61OpqWe4
(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)。557Please respect copyright.PENANAwVhYv2g76M557Please respect copyright.PENANA5D7kk5exHX
557Please respect copyright.PENANAGitha3wv7R
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。557Please respect copyright.PENANAqNaZzzC62N
557Please respect copyright.PENANAzZaVQvPBW0
557Please respect copyright.PENANAjyL27DRqLB
(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。557Please respect copyright.PENANATlKyt90Lsa557Please respect copyright.PENANAzIz3FPTV7d
557Please respect copyright.PENANA0S9hNMVLle
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。557Please respect copyright.PENANApQoEFgvWBu
557Please respect copyright.PENANA2var3ys2Ak
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。557Please respect copyright.PENANAtncTqWQ1ca
557Please respect copyright.PENANAmDEtlfRRss
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。557Please respect copyright.PENANAfRfmJYO7Al
557Please respect copyright.PENANA7onL2mtM48
影片:https://www.youtube.com/watch?v=pV0SAKY5iTY557Please respect copyright.PENANAixTAtQRPzY
557Please respect copyright.PENANAT82FYWyNL9
557Please respect copyright.PENANAaaaLBLMU3G
557Please respect copyright.PENANAJjizrL5Eej
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。557Please respect copyright.PENANAPL59vEVU4x
557Please respect copyright.PENANAqumMjvfTfp
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/toc557Please respect copyright.PENANAR4njxrCiW1
557Please respect copyright.PENANA4Z7JkMh9jX
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。557Please respect copyright.PENANAF08LJX0WNq
557Please respect copyright.PENANApKh4mTDWd3
Link:557Please respect copyright.PENANAWHJi6gBrgA
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio557Please respect copyright.PENANA0Ux5cprCx3
557Please respect copyright.PENANAsiltcfgCgO
557Please respect copyright.PENANAx5ncHbIgZs
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。557Please respect copyright.PENANAD6C1gmXEdR
557Please respect copyright.PENANA1sAh3YxhIP
Ref1:https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1009429557Please respect copyright.PENANALEM4C5C2X7