There were some sites where one percent of all the skulls have these holes, and so you can see that neurologic and psychiatric disease is quite common, and it was also quite common about 7,000 years ago.
Il y a certains sites où 1 % de tous les crânes ont ces trous, alors on peut voir que les maladies neurologiques et psychiatriques sont assez courantes, comme elles l'étaient il y a environ 7 000 ans.