The Environment's Impact on Thinking When Added to Leg Cycling in People With TBI: VITAL

Inclusion Criteria: * Be at least 18 years of age and younger than 59 years of age * Speak English as their primary language * Have had a previous TBI at least one year prior\\ Exclusion Criteria: * Have contraindications to moderate or high intensity physical activity, based on the Physical Activity Readiness Questionnaire (PAR-Q) * Have a history of psychiatric illness (ex: major depression, bipolar disorder, schizophrenia), neurological disorders beyond TBI (ex: stroke, seizure disorder), or substance abuse * Currently use medications that might impact cognition (ex: steroids, benzodiazepines, neuroleptics) * Be currently pregnant * Have visual impairments not otherwise corrected by contact lenses (ex: stereo blindness, colorblindness) * Have a high likelihood of motion sickness