Method for determining the relative amplitude of eye and head movements of an individual, comprising:- a target providing step during which a list of visual targets comprising at least two different visual targets is provided,- a reference positioning step,- a reference target providing step during which a reference target comprising a visual and auditory target is provided,- a reference target gazing step during which the individual gazes at the reference target,- a peripheral target providing step during which a peripheral target comprising a visual and auditory target is provided,- a peripheral target gazing step during which the individual gazes at the peripheral target,- a rotation measurement step during which the angle of rotation of the individuals head and the angle of rotation of the individuals eyes are measured.