Huchzermeyer C, Kremers J (2016)
Publication Type: Journal article
Publication year: 2016
Book Volume: 33
Pages Range: 1989-1998
Journal Issue: 10
We established a protocol using a well-established LED stimulator to measure temporal contrast sensitivities driven by sine-wave modulation of L- and M-cones in the perifovea using triple silent substitution. The stimulus was presented in an annular field (2° inner diameter, 13° outer diameter). We validated this technique by studying the contrast sensitivity of three color normal observers at 10 different temporal frequencies (between 1 and 28 Hz) over a large range of retinal illuminances (between 0.07 and 587 phot Td), spanning the complete mesopic range. In one subject, sensitivities to counterphase modulation of L- and M-cones and in-phase modulation of L, M, and S-cones were additionally measured, which putatively reflected the parvo- and magnocellular retinogeniculate pathways, respectively. Furthermore, we performed measurements of temporal contrast sensitivities as a function of frequency at 294 phot Td in two protanopes, in two deuteranopes, and in one subject with S-cone monochromacy. Quality of isolation was satisfactory and we were able to reproduce known physiological patterns of temporal vision, such as the typical temporal contrast sensitivity functions of the L- and M-cone, the parvo- and magnocellular retinogeniculate pathways, as well as the light adaptation curves. These results will help determine optimal stimulus conditions in future studies. Results from the dichromats and the S-cone monochromat also support the quality of isolation of our protocol and underpin its potential clinical value.
APA:
Huchzermeyer, C., & Kremers, J. (2016). Perifoveal L- and M-cone-driven temporal contrast sensitivities at different retinal illuminances. Journal of the Optical Society of America A-Optics Image Science and Vision, 33(10), 1989-1998.
MLA:
Huchzermeyer, Cord, and Jan Kremers. "Perifoveal L- and M-cone-driven temporal contrast sensitivities at different retinal illuminances." Journal of the Optical Society of America A-Optics Image Science and Vision 33.10 (2016): 1989-1998.
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