Sir please define capacitation and its location

sir i didn;t find it in ncert

can u ellaborate ?

Capacitationis a functional maturation of the spermatozoon. The changes take place via the sperm cell membrane in which it may be that receptors are made available through the removal of a glycoprotein layer. The area of the acrosomal cap is also so altered thereby that the acrosome reaction becomes possible.