i had the misfortune to injure my head. my job requires incredible ability  
to juggle multiple things at once at an unbelievable level of proficiency.  
my verbal memory and executive function are impaired. does anyone have  
experience with this, and did it grow back? mine is returing really slowly  
but i'm worried that it won't be as proficient as before, because before  
was a very high level. please email if you can give info. thanks