Inclusion Criteria:  18 years;  Have minimal cognitive impairment, defined as a score between 0 and 8 on the Short Blessed test for cognitive function; English as a first language or fluency. Those that have an mTBI/Concussion during the season must have a diagnosis of mTBI from a healthcare professional (physiotherapist or medic) based upon standard criteria or identified head injury from contact sport.  Exclusion Criteria:  Medical history of a neurological illness that could grossly affect balance or coordination (such as. stroke, greater than mild TBI, lower-extremity amputation, recent lower extremity or spine orthopaedic injury requiring a profile). Be a pregnant female Have past history of peripheral vestibular pathology or eye movement deficits. Be unable to abstain from medication/alcohol 24 hours in advance of testing