Spatial summation of S-cone ON and OFF signals: Effects of retinal eccentricity

Vassilev, A.; Mihaylova, Milena; Racheva, Kalina; Zlatkova, Margarita; Anderson, R. H.

doi:10.1016/j.visres.2003.08.002

Cited by 34 publications

(34 citation statements)

References 31 publications

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“…As far as one could judge from their Figure 9, Ricco's area increased at a higher rate than the dendritic field size of the small bistratified cells (SBCs) known until recently as the only S-cone ON cells (Dacey & Lee, 1994). In the second study, Vassilev, Mihaylova, Racheva, Zlatkova, and Anderson (2003) confirmed this finding for the temporal horizontal retinal meridian. Volbrecht et al (2000) found it Bdifficult to conclude whether Ricco's area for the S-cone mechanism is directly related to dendritic field size [.…”

Section: Introductionmentioning

confidence: 53%

Human S-cone vision: Relationship between perceptive field and ganglion cell dendritic field

Vassilev¹,

Ivanov²,

Zlatkova³

et al. 2005

Journal of Vision

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We measured the S-cone contrast threshold for stimuli of different size modulated along the white -90 deg direction in the isoluminant plane of DKL color space. The stimuli were presented at eccentricities of 5-30 deg in the horizontal temporal retinal meridian. Ricco's area of complete spatial summation was estimated using a bilinear fit of the log threshold/log area function. Ricco's area increased towards the retinal periphery to include an increasing number of S-cones while remaining 1.6-1.8 times larger than the dendritic field area of the small bistratified and parasol retinal ganglion cells. Assuming constant coverage factor by the dendritic field, Ricco's area incorporated a constant number (three to four) of small bistratified cells. It was also found that the threshold contrast for stimuli that matched Ricco's area was constant across the studied eccentricity range, similar to previous findings for achromatic vision. Our data support the point of view that this invariance is the result of a constant number of cells involved in stimulus detection.

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Section: Introductionmentioning

confidence: 53%

Human S-cone vision: Relationship between perceptive field and ganglion cell dendritic field

Vassilev¹,

Ivanov²,

Zlatkova³

et al. 2005

Journal of Vision

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“…Behavioral work points to the presence of separate pathways for signaling S-cone increments and decrements (Krauskopf et al, 1982;Vassilev et al, 2003). There is evidence that the mechanism that detects S-cone decrements has lower sensitivity and a more linear contrast response than the mechanism that detects S-cone increments (Vingrys and Mahon, 1998) (but see Sakurai and Mullen, 2006), and the L-and M-cone contributions to these two mechanisms are thought to differ (McLellan and Eskew, 2000).…”

Section: Relationship To Psychophysicsmentioning

confidence: 99%

Functional Asymmetries in Visual Pathways Carrying S-Cone Signals in Macaque

Tailby

Solomon²,

Lennie³

2008

J. Neurosci.

132

152

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In the lateral geniculate nucleus of macaque, we recorded from neurons with substantial input from S-cones and found that, on several important dimensions, the properties of neurons that receive inhibitory input from S-cones ("SϪ") are quite unlike those of neurons that receive excitatory input from S-cones ("Sϩ"). First, the organization of chromatic inputs differs substantially: in Sϩ cells, S-cone signals were usually opposed by those of L-and M-cones; in SϪ cells, signals from L-cones were usually opposed to those of S-and M-cones. Second, to pure S-cone modulation, Sϩ cells are twice as sensitive as SϪ cells, but SϪ cells were much more susceptible to contrast adaptation. Third, in SϪ cells but not Sϩ cells, the spatial frequency resolution for achromatic modulation was often greater, the tuning curve and more bandpass, than that for S-cone modulation. Along the dimensions on which we measured, the properties of the Sϩ cells were relatively tightly clustered, suggesting a homogenous class. Although the chromatic properties of SϪ cells are heterogeneous, the distribution of their tuning along other stimulus dimensions does not suggest multiple subtypes.

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“…Vassilev et al 14 used a modified version of Stiles' two-color threshold technique. At eccentricities greater than 5°, they found that the area of spatial summation was greater for S-cone decrements than that for S-cone increments, suggesting that receptive fields are larger for the S-off subsystem.…”

Section: Bistratified Ganglion Cells S-off Ganglion Cellsmentioning

confidence: 99%

Individual differences provide psychophysical evidence for separate on- and off-pathways deriving from short-wave cones

et al. 2013

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(2014) Individual differences provide psychophysical evidence for separate onand off-pathways deriving from short-wave cones. Journal of the Optical Society of America A, 31 (4). A47-A54. ISSN 1084-7529 This version is available from Sussex Research Online: http://sro.sussex.ac.uk/52508/ This document is made available in accordance with publisher policies and may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the URL above for details on accessing the published version. Copyright and reuse:Sussex Research Online is a digital repository of the research output of the University.Copyright and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable, the material made available in SRO has been checked for eligibility before being made available.Copies of full text items generally can be reproduced, displayed or performed and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. S-cones, S-on, S-off, increments, decrements, individual differences, GWAS.

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Spatial summation of S-cone ON and OFF signals: Effects of retinal eccentricity

Cited by 34 publications

References 31 publications

Human S-cone vision: Relationship between perceptive field and ganglion cell dendritic field

Human S-cone vision: Relationship between perceptive field and ganglion cell dendritic field

Functional Asymmetries in Visual Pathways Carrying S-Cone Signals in Macaque

Individual differences provide psychophysical evidence for separate on- and off-pathways deriving from short-wave cones

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