Testing Devices That Involve the Sense of Touch in Subjects With Traumatic Brain Injury

Background: \- Previous studies have shown that computer-based devices that simulate everyday tasks can be helpful for evaluation and rehabilitation in people who have had strokes. Researchers are interested in studying whether similar devices can be used to evaluate and treat individuals who have had a traumatic brain injury, to determine if the device should be developed to help with rehabilitation in the future. Objectives: \- To evaluate the effectiveness of a computer-based simulation compared with actual performance of actions in individuals who have had a traumatic brain injury. Eligibility: \- Individuals at least 18 years of age who have had a non-penetrating mild or moderate traumatic head injury within the past year and have experience playing computer games. Design: * Participants will be screened with a physical and neurological examination and medical history. * Participants will complete questionnaires and an interview about mood and feelings, stress levels, quality of life, and how well they function at work or at home. Participants will also have tests of memory, attention, thinking, and reasoning. Some of the questionnaires and tests will be completed in writing, some orally, and some on a computer. * Participants will have movement and coordination tests that involve simple tasks such as putting pegs in a pegboard, using a key, lifting different objects, and folding things. * Participants will duplicate the movement and coordination tests by using a computer program that simulates the tasks with a cursor on a computer screen. Participants will do four separate simulated tasks (such as arranging letters or hitting a nail with a hammer) three times. * The full visit will take about 4 hours, and no followup visits are required.