1. A method of measuring and analyzing an ocular response in a subject comprising the steps of: A) Providing a video oculography based system for the subject with the video oculography system configured to collect eye images of the subject; B) Collecting eye data with the video oculography based system wherein at least one stimulus is presented to the subject in only one eye and the system is configured to obtain eye responses simultaneously from both eyes of the subject; C) Calculating measurements from the eye data including at least one measurement from the eye which is not being subjected to the stimulus; and D) analyzing a subject's ocular response based upon at least one of the calculated measurements of step C including at least one measurement from the eye which is not being subjected to the stimulus.