Short-wave cone signal in the red-green detection mechanism

Stromeyer, C.F.; Chaparro, Alex; Rodríguez, Carolyn I.; Chen, D.; Hu, Erding; Kronauer, Richard E.

doi:10.1016/s0042-6989(97)00231-9

Cited by 27 publications

(16 citation statements)

References 50 publications

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“…They can detect edges based either on luminance or spectral contrast but are unlikely to have any role in hue perception. Moreover, the S vs. L+M spectral tuning in both neurons does not match the cone inputs to blue-yellow hue perception 23,64,68,78,79 and a subset of midget RGCs with cone inputs matching the fundamental hues 21,22,27,70 has been proposed to mediate hue perception instead (for review, see Neitz & Neitz 54 ). These L vs. M midget RGCs with significant S-cone input to the surround receptive field are another controversial midget RGC subtype that warrants additional investigation.…”

Section: Discussionmentioning

confidence: 99%

An S-cone circuit for edge detection in the primate retina

Patterson

Kuchenbecker

Anderson

et al. 2019

Preprint

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Midget retinal ganglion cells (RGCs) are the most common RGC type in the primate retina. Their responses mediate both color and spatial vision, yet the specific links between midget RGC responses and visual perception are unclear. Previous research on the dual roles of midget RGCs has focused on those comparing long (L) vs. middle (M) wavelength sensitive cones. However, there is evidence for several other rare midget RGC subtypes receiving S-cone input, but their role in color and spatial vision is uncertain. Here, we confirm the existence of the single S-cone center OFF midget RGC circuit in the central retina of macaque monkey both structurally and functionally, by combining single cell electrophysiology with 3D electron microscopy reconstructions of the upstream circuitry. Like the well-studied L vs. M midget RGCs, the S-OFF midget RGCs have a centersurround receptive field consistent with a role in spatial vision. While spectral opponency in a primate RGC is classically assumed to contribute to hue perception, a role supporting edge detection is more consistent with the S-OFF midget RGC receptive field structure and studies of hue perception.

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Section: Discussionmentioning

confidence: 99%

An S-cone circuit for edge detection in the primate retina

Patterson

Kuchenbecker

Anderson

et al. 2019

Preprint

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“…Differences in the genes encoding the cone pigments suggest that these two chromatic dimensions represent two subsystems of color vision that evolved at different times. 9 The LvsM and SvsLM axes differ from the principal axes implied by color appearance, and some measures of sensitivity point both to interactions between the two axes 10,11 and to further mechanisms tuned to intermediate color directions. 12 Yet along with luminance, the LvsM and SvsLM axes are thought to define the cardinal axes underlying early postreceptoral color coding.…”

Section: Introductionmentioning

confidence: 99%

Variations in normal color vision I Cone-opponent axes

et al. 2000

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Early postreceptoral color vision is thought to be organized in terms of two principal axes corresponding to opposing L- and M-cone signals (LvsM) or to S-cone signals opposed by a combination of L- and M-cone signals (SvsLM). These cone-opponent axes are now widely used in studies of color vision, but in most cases the corresponding stimulus variations are defined only theoretically, based on a standard observer. We examined the range and implications of interobserver variations in the cone-opponent axes. We used chromatic adaptation to empirically define the LvsM and SvsLM axes and used both thresholds and color contrast adaptation to determine sensitivity to the axes. We also examined the axis variations implied by individual differences in the color matching data of Stiles and Burch [Opt. Acta 6, 1 (1959)]. The axes estimated for individuals can differ measurably from the nominal standard-observer axes and can influence the interpretation of postreceptoral color organization (e.g., regarding interactions between the two axes). Thus, like luminance sensitivity, individual differences in chromatic sensitivity may be important to consider in studies of the cone-opponent axes.

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“…Temporal integration of neural signals longer than the 13.3-ms chromatic change would raise threshold with the temporally extended pedestal (Cole et al, 1990;Eskew et al, 1994;Stromeyer et al, 1998). Chromatic detection was significantly better in the pulse condition, when the luminance (Experiment 1) or chromatic (Experiment 2) pedestal was temporally coincident with the chromatic change.…”

Section: The Influence Of Motion On Chromatic Detectionmentioning

confidence: 91%

Influence of motion on chromatic detection

Monnier

Shevell

2004

Vis Neurosci

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Intense scrutiny has been focused on whether chromatic stimuli contribute to motion perception. The present study considers a related but different question: how does motion affect chromatic detection? Detection thresholds were measured for a disk that underwent a brief (13.3 ms) chromatic change in the L/(L+M) chromatic direction. The disk's presentation sequence and speed (0-16 deg/s) were manipulated. In the coherent presentation sequence, the disk moved smoothly along a circular path centered on the fixation point. In the random presentation sequence, the disk appeared randomly at positions along the circular path. In both types of sequences, the disk underwent a brief chromatic change midway through the temporal presentation sequence. Threshold was elevated in the coherent condition compared to the random condition, and threshold decreased with an increase in speed. The threshold elevation observed in the coherent presentation sequence can be accounted for by temporal integration. The decrease in threshold with an increase in speed can be accounted for by spatial integration. The results, therefore, can be explained by spatiotemporal integration, without invoking a neural mechanism specialized for motion.

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Short-wave cone signal in the red-green detection mechanism

Cited by 27 publications

References 50 publications

An S-cone circuit for edge detection in the primate retina

An S-cone circuit for edge detection in the primate retina

Variations in normal color vision I Cone-opponent axes

Influence of motion on chromatic detection

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