Rod influence on hue-scaling functions

Buck, Steven L.; Knight, Roger; Fowler, Garth A.; Hunt, Brian R.

doi:10.1016/s0042-6989(97)00436-7

Cited by 52 publications

(57 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6] Studies from our lab 1,6 and others 4 have shown a rod influence on all four basic hues, suggesting an effect of rod signals on both opponent-hue dimensions. These rod influences appear to fall into at least two categories: a "faster" enhancement of green, and a "slower" enhancement of blue and short-wavelength red (SW red).…”

Section: Introductionmentioning

confidence: 67%

“…We infer that the "slower" rod influence was enhanced by the addition of rod stimulation in the region of the test probe, rather than the background, because similar enhancement results from prolonged stimulation of the test-probe region alone. 1 One implication of this study is that the specific pattern of rod influence on hue is expected to depend heavily on temporal and intensive stimulus variables. The net rod influence on hue appearance reflects the combined contributions from both "slower" and "faster" rod influences.…”

Section: Discussionmentioning

confidence: 93%

See 1 more Smart Citation

Rod influences on hue perception: Effect of background light level

Knight¹,

Buck²

2000

Color Res. Appl.

Self Cite

View full text Add to dashboard Cite

Rod signals interact with red-green and blueyellow perceptual hue dimensions to influence color appearance across the spectrum. Hue-naming studies from our lab have identified at least two rod-mediated mechanisms with different spectral and temporal properties: (1) a "faster" rod influence enhances green relative to red; and (2) a "slower" rod influence enhances short-wavelength red and blue. These two types of rod influence are revealed by a probe-flash paradigm . In the present study, we examine the effects of background light level on "faster" and "slower" rod mechanisms. We find both rod influences at higher light levels, but only the "faster" influence at lower light levels. These data provide additional support for the existence of two types of rod influence on hue that differ from each other in spectral specificity, temporal properties, and light-level dependence.

show abstract

Section: Introductionmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 93%

Rod influences on hue perception: Effect of background light level

Knight¹,

Buck²

2000

Color Res. Appl.

Self Cite

View full text Add to dashboard Cite

show abstract

“…1,2 The size of these peripheral zones depends on the spatial scale of the test stimuli, and, indeed, when stimuli are suitably scaled in size, fovealike color vision can be experienced out to at least 45 deg retinal eccentricity. [3][4][5][6][7] Abramov et al 6 obtained hue-scaling data at a series of retinal loci and found that hue increased with field size up to an asymptotic level at each locus, ''as if some perceptive field was being filled, by analogy to similar results from receptive fields of neurons'' (p. 405; see also Refs. 8 and 9).…”

Section: Introductionmentioning

confidence: 92%

Senescent changes in parafoveal color appearance: saturation as a function of stimulus area

Knau

Werner

2002

J. Opt. Soc. Am. A

View full text Add to dashboard Cite

The chromatic content (saturation) of monochromatic stimuli (480, 505, 577, and 650 nm) was scaled as a function of field size at three different retinal locations by 58 observers ranging from 18 to 83 yr of age. The different retinal locations (6 deg nasal, 2.5 deg inferior and 6 deg temporal eccentricity) were chosen according to anatomical studies demonstrating different degrees of senescent losses of cones or ganglion cells. Nine field sizes were tested, ranging from 0.0096 to 0.96 deg in diameter. The subjects used a percentage scale to judge the saturation of the flashed stimulus presentations (2 s on, 5 s off). The data analysis demonstrated that older observers require larger field sizes than younger observers to perceive hue as well as larger field sizes to reach the same level of scaled saturation. The spatial dependency of color appearance for younger and older observers was not correlated with senescent losses in retinal cells reported for the different retinal locations. The data were modeled by using an impulse-response function (i.e., Naka-Rushton equation) so that perceptive fields could be compared to electrophysiological measures of receptive fields or dendritic fields of retinal and cortical cells.

show abstract

“…These three rod hue enhancements are shown by at least three classes of studies: rod-induced shifts of the loci of unique and binary hues, 6-8 rod-induced shifts of the spectral distributions of the four basic hues (hue scaling), 9 and the time course and intensity dependence of rod-induced hue shifts. [10][11][12] The common feature of all these procedures that allows them to isolate separate rod influences is their use of narrow-band stimuli.…”

Section: Separation Of Rod Influences On Huementioning

confidence: 99%

What is the hue of rod vision?

Buck

2000

Color Res. Appl.

View full text Add to dashboard Cite

Textbooks say rod vision is colorless. However, evidence that rod signals influence hue comes from several lines of psychophysical studies, including scotopic color contrast, color matching, hue scaling, and unique-hue loci. Some widely cited early studies suggested that there is a single rod hue, which is blue. Other studies have suggested that various other hues, or even all hues, can be associated with rod stimulation. This article presents a conceptual framework that helps reconcile many of these findings and that involves two unifying generalizations. (1) Rod signals are associated with signals from all three cone types and have a ubiquitous influence on all portions of the color pathways.(2) But rod signals have multiple inherent biases (differential weightings) in their effects on color pathways, and the "net effect" of these individual biases is often found to be blue. The multiple rod influences on hue, and their net blue influence, may have a basis in the parallel pathways that are the retinal substrate of color vision.

show abstract

Rod influence on hue-scaling functions

Cited by 52 publications

References 15 publications

Rod influences on hue perception: Effect of background light level

Rod influences on hue perception: Effect of background light level

Senescent changes in parafoveal color appearance: saturation as a function of stimulus area

What is the hue of rod vision?

Contact Info

Product

Resources

About