Scott Livingston of the University of Kentucky may have found some information about concussions that we previously did not know/understand.

The physiological changes of the brain injury concussion may still be present even after all the standard symptoms have resolved.  Being published in the Journal of Clinical Neuropyhsiology in February Livingston used motor-evoked potentials (MEP) to track brain physiological response at the same time patients were self-reporting symptoms;

Subjects were evaluated for evidence of concussion based on self-reported symptoms, computerized neurocognitive test performance, and MEPs for a period of 10 days. Post-concussion symptoms were more frequent and greater in severity in Continue reading →