@taml You asked " What kind of doctor or medical person helps him be patient and try to heal before retraining his brain to find his empathy again". As you stated, these changes occurred due to your brother's surgery and perhaps the reason for the surgery. A doctoral-level neuropsychologist or psychologist (Ph.D. or Psy.D) would be the best professional to consult. It would be a good idea for your brother and his wife to ask his neurosurgeon for a referral.

You are so close to the Twin Cities that if there isn't someone in St. Cloud there will be an expert neuropsychologist or psychologist in Minneapolis or St. Paul.