Association between Convergence Insufficiency and EVestG Extracted Features in Post-Concussion Syndrome

Electrovestibulography (EVestGTM) is a novel technology that objectively measures the vestibular response. Our data suggests EVestG recordings may distinguish short-and long-term post-concussion syndrome (S-PCS3 months) from each other and from the healthy controls. EVestG signals are recorded non-invasively from the external ear whilst stationary or in response to vestibular stimuli; the signals consist of the brainstem and peripheral sensory vestibulo-acoustic signals modulated by the cortical responses. It has been shown that the prevalence of Convergence Insufficiency (CI) increases in PCS significantly. In this study, we investigated the correlation of CI and extracted averaged field potentials (FPs) of EVestG signals and the Rivermead post-concussion questionnaire (RPQ) score in individuals with PCS.