Even though science has disproved that notion-new brain cells are in fact continually created, and people can learn new things even in old age-Cajal's followers down to the present day still promote the idea of a "key learning period."
時至今日，儘管科學早已證明這個教條是錯誤的──人腦神經元的確可以再生，人類到老都可以學習新事物，但仍有後繼者執著於探究大腦是否有學習的「關鍵期」？