Traumatic brain injury, the “signature” injury of soldiers returning from Iraq and Afghanistan, is often invisible on the exterior. But the  damage of combat blast forces to memory, attention, decision-making and motor skills can devastate lives.  Now, armed with a new  $1.57 million Department of Defense grant, USF is working with James A. Haley VA Hospital on research  that may  lead to better treatments and readjustment skills for veterans suffering from TBI.