May 11 (CBS HealthWatch) The key to finding yourself may be in the right frontal lobe, a new study suggests. Bruce Miller, MD, a neurologist at the University of California in San Francisco, first became interested in the subject when he noticed dramatic personality changes in patients of his who had a rare type of memory disorder called frontotemporal dementia. He recalls how one high-powered real estate agent quickly downscaled her tastes even though she still had plenty of money.