Inclusion Criteria:  They are ALYN patients undergoing physiotherapy for mild to severe ABI; They experience symptoms of vestibular function such as vertigo, postural instability, or impaired ocular motility; They are between the ages of 8 and 18; The time since injury/event is between 10 days and 1 year after the injury/event; They are able to maintain stable and dynamic positioning of the head; They able to walk with or without assistive equipment, or use a wheelchairs with no need for head support, defined by a LSS (level of sitting scale) score of 3 or greater (scale range: 1-8); Are able to understand basic instructions; Have sufficient visual acuity and visual field to identify and track mid-size objects on a screen.  Exclusion Criteria:  Psychological, neurological or cognitive disorders which could impede participation, such as a history of epileptic seizures; Untreated benign paroxysmal positional vertigo (BPPV); Are in early post-operative stages (to avoid risk of bleeding or cerebrospinal fluid leak); Hearing impairment.