Years of training cause structural changes in a ballerina’s brain that help her stay balanced in the pirouette, said a report Friday that may aid the treatment of chronic dizziness.
週五一份報告指出,女芭蕾舞者的大腦因多年的訓練產生結構性改變,幫助她在急速旋轉時可以保持平衡,並稱這可以幫助慢性頭昏的治療。
Brain scans of professional ballerinas revealed differences from other people in two parts of the brain: one that processes input from the balancing organs in the inner ear, and another responsible for the perception of dizziness.
專業女芭蕾舞者的大腦掃描顯示,大腦有兩處與其他人不同:一處是處理來自內耳中平衡器官的輸入指令,另一處則是負責頭暈覺知。
Most people, after turning around rapidly, feel dizzy for a period thereafter.
大多數人,在迅速轉圈之後,會有一段時間感到頭暈。
This is because of the fluid-filled chambers of the ear’s balance organs, which sense the rotation of the head through tiny hairs that perceive the fluid swishing about. The fluid continues to move for a while after the spin -- which creates the perception that one is moving when still -- hence the dizziness.
這是因為耳朵平衡器官中充滿液體的腔室,透過細毛感知液體流動進而感覺到頭部旋轉。在旋轉過後液體會繼續流動一陣子—在人靜止時創造出持續移動的感覺—因此感到頭暈。
Ballet dancers can perform multiple pirouettes with little or no feeling of dizziness -- a feat that has long puzzled researchers.
芭蕾舞者可以表演多次豎趾旋轉且鮮少或根本不會覺得頭暈—這是個讓研究者一直困惑的技藝。