Abstract: Evaluation of the perception of colors by mammals with a view to obtaining a characteristic biomarker of each tested subject takes advantage of the slow pupillary oscillatory response to generate an objective neurological signature of this perception of colors. A method based on pupil frequency tagging is used at a tagging frequency Ftag adapted to the pupil response speed. A dynamic two-color stimulus is displayed, this stimulus comprising a two-color pattern the colors of which are inverted at the frequency Ftag, one of the colors gradually varying in a range of possible values. From the pupillary response, a signal representative of the oscillation power of the pupil is generated. The minimum of this signal corresponds to the relative iso-luminance of the tested pair of colors.

Abstract: Disclosed is a device including a detector producing a signal depending on variations of the pupil diameter of an eye of a subject, a display for presenting, to the subject, a light pattern subdivided into a plurality of regions, and an analyzer receiving the signal of the detector and analyzing the frequential content thereof. The display is controlled such that each region has a light intensity modulated at a respective modulation frequency, the modulation frequencies being different from one region to the next.

Abstract: The invention relates to the evaluation of the perception of colors by mammals with a view to obtaining a characteristic biomarker of each tested subject. It takes advantage of the slow pupillary oscillatory response to generate an objective neurological signature of this perception of colors. A method based on pupil frequency tagging is used at a tagging frequency Ftag adapted to the pupil response speed. A dynamic two-color stimulus is displayed, this stimulus comprising a two-color pattern the colors of which are inverted at the frequency Ftag, one of the colors gradually varying in a range of possible values. From the pupillary response, a signal representative of the oscillation power of the pupil is generated. The minimum of this signal corresponds to the relative iso-luminance of the tested pair of colors.

Abstract: The invention relates to a system comprising an oculometer for measuring movements of at least one eye of an operator, wherein it comprises furthermore a display for displaying, for the eye, a frame of at least one point performing a blinking, so that the operator can perform at least one smooth tracking movement of the eye while looking at the display while operating. The invention also relates to a method implemented on such a system, and a corresponding computer program product.