http://edocket.access.gpo.gov/cfr_2009/jul...38cfr4.124a.htm 8045 Residuals of traumatic brain injury (TBI): There are three main areas of dysfunction that may result from TBI and have profound effects on functioning: cognitive (which is common in varying degrees after TBI), emotional/behavioral, and physical. Each of these areas of dysfunction may require evaluation......................... Cognitive impairment is defined as decreased memory, c