Abstract: A method for determining an optical system intended to equip a person on the basis of the adaptability of the person to a visual and/or proprioceptive modification of his environment, the method including a person visual behaviour parameter providing, during which a person visual behaviour parameter indicative of the visual behaviour of the person relative to a given state of the environment is provided; a reference value providing, during which a first value of the person visual behaviour parameter corresponding to a reference state of the environment is provided; a visual and/or proprioceptive modification providing, during which a visual and/or proprioceptive modification of the reference state of the environment is provided so as to define a modified state of the environment; and determining, during which an optical parameter of the optical system is determined based on the first value of the person visual behaviour parameter and on a second value of the person visual behaviour parameter associated with t

Abstract: A method for determining an optical system intended to equip a person on the basis of the adaptability of the person to a visual and/or proprioceptive modification of his environment, the method.

Abstract: A system simulating a decisional process in a mammal brain about characteristics of motions related to body gestures of a visually observed body through a simulated visual path is provided. The system includes an interface toward simulated neuronal structures, the interface at least converting luminous information of the observed body to an optic flow data stream conveying information related to the visually observed body and that can be processed in the simulated neuronal structures, the system being a feed-forward system and comprising hierarchically from the visual observation to the decision: the simulated visual path and its interface, a simulated local motion direction detection neuronal structure for the detection of motion directions with receptive fields, a simulated opponent motions detection neuronal structure, a simulated complex patterns detection neuronal structure, and a simulated motion pattern detection neuronal structure.

Abstract: A method for determining a design of a progressive lens intended to be worn by a future wearer, the progressive lens comprising a front surface and a back surface, at least one of the front surface and the back surface comprising a progression profile on its general spherical shape, said at least one progression profile defining a meridian line extending from a distance-vision point to a near-vision point, said meridian line comprising a vertical portion passing through the distance-vision point and an inclined portion passing through the near-vision point, the vertical portion and the inclined portion forming an angle between them, the method including obtaining first data representative of a first measurement of a first postural instability of the future wearer when seeing a visual pattern moving along an mediolateral direction, and determining a reparation between the first progression profile and the second progression profile based on the first data.

Abstract: A method for determining a design of a progressive lens intended to be worn by a future wearer, the progressive lens comprising a front surface and a back surface, at least one of the front surface and the back surface comprising a progression profile on its general spherical shape, said at least one progression profile defining a meridian line extending from a distance-vision point to a near-vision point, said meridian line comprising a vertical portion passing through the distance-vision point and an inclined portion passing through the near-vision point, the vertical portion and the inclined portion forming an angle between them, the method comprising obtaining first data representative of a first measurement of a first postural instability of the future wearer when seeing at a visual pattern moving along an anterior-posterior direction, and determining the angle of the inclined portion based on the first data.

Abstract: A system and method for determining an adapted ophthalmic device for a wearer, the method including acquiring a set of parameters values relating to the wearer, determining at least a task to be performed by the wearer involving visual exploration, using a computing system, determining a value of a criterion assessing an efficiency of the wearer's visual exploration strategy for the task, and determining an optical design of an ophthalmic device to be worn by a wearer according to the determined value of the criterion.

Abstract: A method for determining an optical system intended to equip a person on the basis of the adaptability of the person to a visual and/or proprioceptive modification of his environment, the method.

Abstract: The present disclosure relates to a system and a method for determining a perceptual-cognitive signature of a subject. A plurality of objects moves at a controlled speed on a visual display, for a predetermined duration in each of a series of core trials. The subject identifies one or more target objects amongst the plurality of objects. The perceptual-cognitive signature of the subject is determined according to the number of target objects, the speed of the objects, the predetermined duration of each of the series of core trials, and a correctness of identifications, by the subject after each predetermined duration, of the target objects over the series of core trials.

Abstract: The application relates to a method for adapting the visual and/or visual-motor behavior of a person, including: providing an optical parameter and a person visual parameter; providing a target value; modifying a visual and/or visual motor behavior; assessing a person visual parameter; determining a suitable visual and/or visual-motor behavior; and adapting the visual and/or visual-motor behavior of the person.

Abstract: The present disclosure relates to a perceptual-cognitive-motor learning system. The system includes an apparatus for evaluating or improving perceptual-cognitive abilities of a subject during a training sequence. The system also has a training sequence controller for adding in at least a part of the training sequence at least one of (a) a first motor load add-on to the subject and (b) a second motor load add-on to the subject, the second motor load being heavier than the first motor load. A variant of the system has a user interface for allowing the subject to change at least one parameter of the training sequence. Methods for evaluating or improving perceptual-cognitive abilities of a subject are also disclosed.

Abstract: A device and method for measuring mild perceptual impairment of a human subject, in which a stimulus having at least one parameter is applied to the human subject. The human subject produces a response to the stimulus indicative of a perception by the human subject of the at least one parameter of the stimulus. The response of the human subject is then processed in view of determining if the human subject suffers from mild perceptual impairment.

Abstract: A configurable system is used to evaluate stimulus sensitivity of a subject. An action channel provides a stimulus to the subject and a reaction channel receives a response from the subject. A signal pathway is connected to the action channel and to the reaction channel. A controller establishes loops within the signal pathway. Loop types include a transduction loop including the action channel and forming a path terminating in the signal pathway, and a channel loop including the action channel and terminating at a reference unit. Other possible loop types include an interface loop including the action channel, the reaction channel and the reference unit having an initial parameter value, and an adaptive loop including the action channel, the reaction channel and the reference unit whose parameter value is adapted based on the response from the subject. A method using the system is also described.

Abstract: The present disclosure relates to a perceptual-cognitive-motor learning system. The system includes an apparatus for evaluating or improving perceptual-cognitive abilities of a subject during a training sequence. The apparatus includes a display configured to provide to the subject a visual contact with an environment. The system also has a training sequence controller configured to consolidate results of first successive tests made using a single spatial zone formed by the environment, segment the into a plurality of spatial zones, and consolidate results of second successive tests made using the plurality of spatial zones. Methods for evaluating or improving perceptual-cognitive abilities of a subject are also disclosed.

Abstract: Method for measuring the visually-induced postural instability of a person is described, the method comprising a display providing step (S1) during which a visual display device is provided. The display device is arranged so as to display a dynamic visual pattern in at least 50% of the lower half of the visual field of the person, leaving an upper half of the visual field of the person free. The method also comprises a display step (S2) during which a dynamic visual pattern is displayed on the visual display device. The method further comprises a measuring step (S3) during which a parameter representative of the postural instability is measured when the person is gazing at a fix target straight in front while having the dynamic visual pattern displayed on the visual display device.

Abstract: A device and method for evaluating or improving perceptual-cognitive abilities of a subject, comprising displaying virtual objects moving in a given three-dimensional environment during successive tests. The subject is in visual contact with the virtual objects moving in the three-dimensional environment, and the speed of movement of the virtual objects in the three-dimensional environment during the successive tests is changed.

Abstract: A configurable system is used to evaluate stimulus sensitivity of a subject. An action channel provides a stimulus to the subject and a reaction channel receives a response from the subject. A signal pathway is connected to the action channel and to the reaction channel. A controller establishes loops within the signal pathway. Loop types include a transduction loop including the action channel and forming a path terminating in the signal pathway, and a channel loop including the action channel and terminating at a reference unit. Other possible loop types include an interface loop including the action channel, the reaction channel and the reference unit having an initial parameter value, and an adaptive loop including the action channel, the reaction channel and the reference unit whose parameter value is adapted based on the response from the subject. A method using the system is also described.

Abstract: The present disclosure relates to a perceptual-cognitive-motor learning system. The system includes an apparatus for evaluating or improving perceptual-cognitive abilities of a subject during a training sequence. The apparatus includes a display configured to provide to the subject a visual contact with an environment. The system also has a training sequence controller configured to consolidate results of first successive tests made using a single spatial zone formed by the environment, segment the into a plurality of spatial zones, and consolidate results of second successive tests made using the plurality of spatial zones. Methods for evaluating or improving perceptual-cognitive abilities of a subject are also disclosed.

Abstract: The present disclosure relates to a system and a method for determining a perceptual-cognitive signature of a subject. A plurality of objects moves at a controlled speed on a visual display, for a predetermined duration in each of a series of core trials. The subject identifies one or more target objects amongst the plurality of objects. The perceptual-cognitive signature of the subject is determined according to the number of target objects, the speed of the objects, the predetermined duration of each of the series of core trials, and a correctness of identifications, by the subject after each predetermined duration, of the target objects over the series of core trials.

Abstract: 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; and, —a rotation measurement step during which the angle of rotation of the individual's head and the angle or rotation of the individual's eyes are measured.

Abstract: There is described a probe device for optically investigating a tissue of a subject, comprising: a first probe element, a second probe element, and a third probe element each to be positioned at a respective vertex of a triangle for sensing the tissue, the first probe element each comprising a first light source for emitting light having a first wavelength, the second probe element each comprising a second light source for emitting light having a second wavelength and a first photodetector for detecting light having the first wavelength and scattered by the tissue, and the third probe element comprising a second photodetector for detecting light having the first and second wavelengths and scattered by the tissue.