[1] Penn State Univ, Dept Kinesiol & Neurosurg, Penn State Ctr Sports Concuss, Penn State Hershey Med Ctr, University Pk, PA 16802 USA
[2] Univ Rochester Sch Med & Dent, Dept Emergency Med, Rochester, NY USA
[3] Brigham Young Univ, Dept Psychol & Neurosci, Provo, UT 84602 USA
[4] Boston Univ Sch Med, Dept Neurosurg, Ctr Study Traumat Encephalopathy, Boston, MA USA
[5] NINDS, Human Motor Control Sect, NIH, Bethesda, MD 20892 USA
[6] Penn State Univ Hershey Med Ctr, Penn State Inst Neurosci Engn & Mech, Dept Neurosurg, Hershey, PA USA
[7] Univ Calif Los Angeles, David Geffen Sch Med, UCLA Brain Injury Res Ctr, Dept Neurosurg Mol & Med Pharmacol, Los Angeles, CA 90095 USA
[8] Mind Res Network, Albuquergue, NM USA
[9] Univ Calif Los Angeles, David Geffen Sch Med, Dept Neurol, Los Angeles, CA 90095 USA
[10] Ronald Reagan UCLA Med Ctr, Dept Clin Neurophysiol, Los Angeles, CA USA
[11] Wayne State Univ Sch Med, Dept Biomed Engn & Radiol, Detroit, MI USA
[12] Univ Catania, Dept Biol Geol & Environm Sci, Div Biochem & Mol Biol, I-95124 Catania, Italy
[13] Orlando Reg Med Ctr Inc, Dept Emergency Med, Orlando, FL USA
[14] Univ Roma Tor Vergata, Sect Neurosurg, Dept Biomed & Prevent, Rome, Italy