God will design our "complete" brains in believers' resurrection when Jesus returns. Is that what you want to know,
@Holy999?
Php 3:20 But our citizenship is in heaven, and from it we await a Savior, the Lord Jesus Christ,
Php 3:21 who will transform our lowly body to be like his glorious body, by the power that enables him even to subject all things to himself.
1Co 15:42 So is it with the resurrection of the dead. What is sown is perishable; what is raised is imperishable.
1Co 15:43 It is sown in dishonor; it is raised in glory. It is sown in weakness; it is raised in power.
1Co 15:44 It is sown a natural body; it is raised a spiritual body. If there is a natural body, there is also a spiritual body.