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501 results
  • An arbitrary-spectrum spatial visual stimulator for vision research. [Journal Article]
    Elife 2019; 8Franke K, Maia Chagas A, … Euler T
  • Visual neuroscientists require accurate control of visual stimulation. However, few stimulator solutions simultaneously offer high spatio-temporal resolution and free control over the spectra of the light sources, because they rely on off-the-shelf technology developed for human trichromatic vision. Importantly, consumer displays fail to drive UV-shifted short wavelength-sensitive photoreceptors,…
  • Paradoxical impact of memory on color appearance of faces. [Journal Article]
    Nat Commun 2019; 10(1):3010Hasantash M, Lafer-Sousa R, … Conway BR
  • What is color vision for? Here we compared the extent to which memory modulates color appearance of objects and faces. Participants matched the colors of stimuli illuminated by low-pressure sodium light, which renders scenes monochromatic. Matches for fruit were not predicted by stimulus identity. In contrast, matches for faces were predictable, but surprising: faces appeared green and looked sic…
  • Melanopsin and Cone Photoreceptor Inputs to the Afferent Pupil Light Response. [Journal Article]
    Front Neurol 2019; 10:529Zele AJ, Adhikari P, … Feigl B
  • CONCLUSIONS: The visual system uses the L-, M-, and S-cone photoreceptor inputs to the afferent pupil pathway to accomplish the tonic modulations of pupil size to changes in image contrast. The inner retinal melanopsin-expressing ipRGCs mediate the longer-term, sustained pupil constriction to set the light-adapted pupil diameter during extended light exposures.
  • Diverse Cell Types, Circuits, and Mechanisms for Color Vision in the Vertebrate Retina. [Review]
    Physiol Rev 2019; 99(3):1527-1573Thoreson WB, Dacey DM
  • Synaptic interactions to extract information about wavelength, and thus color, begin in the vertebrate retina with three classes of light-sensitive cells: rod photoreceptors at low light levels, multiple types of cone photoreceptors that vary in spectral sensitivity, and intrinsically photosensitive ganglion cells that contain the photopigment melanopsin. When isolated from its neighbors, a photo…
  • Melanopsin driven enhancement of cone-mediated visual processing. [Journal Article]
    Vision Res 2019; 160:72-81Zele AJ, Adhikari P, … Feigl B
  • The precise control of visual sensitivity to variations in external lighting is critical for optimising human visual function in a changing environment. In photopic illumination, the cone photoreceptors and their post-receptoral pathways have a primary role in regulating these adjustments; it is not fully understood how a small population of melanopsin-expressing, intrinsically photosensitive ret…
  • Color Patterning of Luminescent Perovskites via Light-Mediated Halide Exchange with Haloalkanes. [Journal Article]
    Adv Mater 2019; 31(24):e1901247Wong YC, Wu WB, … Tan ZK
  • Lead halide perovskite possesses a semiconductor bandgap that is readily tunable by a variation in its halide composition. Here, a photo-activated halide exchange process between perovskite nanocrystals and molecular haloalkanes is reported, which enables the perovskite luminescence to be controllably shifted across the entire visible spectrum. Mechanistic investigations reveal a mutual exchange …
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