Method and system for characterizing the visual system of a subject

    公开(公告)号:US11857254B2

    公开(公告)日:2024-01-02

    申请号:US17044029

    申请日:2019-03-28

    Abstract: The invention relates to a method for characterizing a visual system of a subject using measures of the sensitivity to contrast, the visual system comprising visual signal processing elements each having an impact on the sensitivity to contrast, wherein a visual test where visual patterns having different spatiotemporal frequencies and with varying luminance levels and with varying levels of visual degradation of the visual patterns are shown to a subject to measure the sensitivity to contrast of said subject, is performed, wherein a predetermined response model of a visual system is preestablished on the basis of a determination of the visual signal processing element that predominantly limits the sensitivity to contrast for each value of luminance and spatiotemporal frequency, said predetermined response model relating the visual signal processing elements predominantly limiting the sensitivity to contrast to the luminances and to the spatiotemporal frequencies, wherein at least one of the visual signal processing elements is selected in order to be investigated, wherein at least one visual test is performed on the visual system of the subject, said visual test being optimized according to said at least one selected visual signal processing element, during the optimized visual test, the variations of the luminance levels and of spatiotemporal frequencies being limited within a range of luminance and a range of spatiotemporal frequency where the predetermined response model locates the visual signal processing element as predominant in limiting the sensitivity to contrast.

    Scaffold Contrained Molecular Generation Using Memory Networks

    公开(公告)号:US20230420084A1

    公开(公告)日:2023-12-28

    申请号:US18022805

    申请日:2021-08-25

    Inventor: Maxime Langevin

    CPC classification number: G16C20/50 G16C20/70

    Abstract: A computer-implemented method of generating a molecule includes sequentially processing, by a memory network, each token in a token string representation of a molecular scaffold to generate a molecule, wherein the token string representation comprises a plurality of tokens representing predefined structures of the molecular scaffold and one or more tokens representing open positions of the molecular scaffold, and wherein the memory network encodes a sequential probability distribution on the tokens using an internal state of the memory network. The method further includes outputting, from the memory network, a token string representation of the generated molecule. Sequentially processing each token in the token string representation of the molecular scaffold includes determining whether or not a current token being processed is a token representing an open position of the molecule.

    DEVICE FOR DETERMINING THE POSITION OF TRAPPED OBJECTS IN OPTICAL TWEEZERS

    公开(公告)号:US20230400402A1

    公开(公告)日:2023-12-14

    申请号:US18250514

    申请日:2020-10-29

    CPC classification number: G01N15/1434 G02B21/32 G02B21/0088

    Abstract: The present invention relates to a device for determining the position of a plurality of objects that are simultaneously trapped by a single laser beam, characterized in that the device comprises:—a laser source for emitting a laser beam, an actuation system for a three-dimensional deflecting of the laser beam between several trapping points,—a microscope objective for focusing the laser beam coming from the actuation system on the trapping points,—a sample chamber including the objects to be trapped on the trapping points,—a light source for lighten the sample chamber, and—a camera for determining the position of each of the trapped objects, said camera being located between the laser source and the actuation system, so that the light emitted by the light source passes successively through the sample chamber, the microscope objective, the actuation system and the camera.

Patent Agency Ranking