Quantitative analysis of cat retinal ganglion cell response to visual stimuli

Rodieck, R. W.

doi:10.1016/0042-6989(65)90033-7

Cited by 713 publications

(447 citation statements)

References 9 publications

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“…The biases seen in the present study of feline dLGN cells were found in X and Y cells, and cells exhibiting such biases did not appear to differ in any other respect from those with no bias. Although previous reports have not identified directional biases in feline retinal ganglion cells, only a very small number of studies have used similar stimulus protocols to those used in the present study (Rodieck & Stone, 1965;Lee & Willshaw, 1978;Cleland, Harding & Tulanay-Keesey, 1983a). Given that these previous studies primarily addressed other issues, it would appear premature to disregard the possibility that such biases might occur in the retina.…”

Section: Cells With Directional Biasmentioning

confidence: 86%

Directional asymmetries in the length‐response profiles of cells in the feline dorsal lateral geniculate nucleus.

Jones¹,

Sillito²

1994

The Journal of Physiology

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1. The visual cortex provides a major synaptic input to the dorsal lateral geniculate nucleus (dLGN). Cortical layer VI cells giving rise to this projection are strongly influenced by stimulus orientation, length and direction of motion. In the dLGN, a significant component of the strong length tuning exhibited by most cells follows from the corticofugal influence. We have now checked whether there are directional biases in geniculate cell responses, and whether such biases are influenced by stimulus length. 2. The responses of A‐laminae dLGN cells were assessed by single‐unit extracellular recording. Length preference was examined by plotting multihistogram length‐tuning curves to moving bars of light of various length. 3. Over half of the cells tested (100/183) exhibited directional bias and in many cases, this bias was highly dependent on bar length, resulting in radically different length response profiles for the two directions of motion. These asymmetries are similar to those documented for cortical hypercomplex cells, but do not equate to any known facet of the centre‐surround organization of dLGN cell receptive fields. 4. We suspected the directional biases followed from the influence of the corticofugal projection. To test this, we recorded from preparations where areas 17 and 18 of the visual cortex had been removed. Surprisingly, a similar proportion of cells exhibited directional biases after removal of the corticofugal input, suggesting that the biases are generated subcortically. 5. The widespread presence of systematic biases in the response profiles of dLGN cells further underlines the possibility that geniculate mechanisms may make a far greater contribution to visual processing than hitherto suspected.

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Section: Cells With Directional Biasmentioning

confidence: 86%

Directional asymmetries in the length‐response profiles of cells in the feline dorsal lateral geniculate nucleus.

Jones¹,

Sillito²

1994

The Journal of Physiology

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“…ν is spatial frequency and f is temporal frequency. Both center and surround are assumed to have Gaussian spatial weighting with characteristic radii r c and r s (Rodieck, 1965;Enroth-Cugell & Robson, 1966), the former being a function of temporal frequency and the latter independent of temporal frequency (Frishman et al, 1987). The characteristic radius is the radial width of the center or surround mechanism when responsivity has declined by 1/e from its peak.…”

Section: Receptive Field Model and Data Fittingmentioning

confidence: 99%

“…This would be the case were center size not to depend on frequency. In such a case, h 1,S (ξ, ψ) would be the luminance spatial weighting function of the X-cell center, generally modeled as a Gaussian function (Rodieck, 1965;Enroth-Cugell & Robson, 1966), and h 1,t (τ) would be the X-cell center's impulse response. However, the results of Fig.…”

Section: Dependence Of Center Radius On Temporal Frequency Under Highmentioning

confidence: 99%

Spatiotemporal integration of light by the cat X-cell center under photopic and scotopic conditions

Troy

Bohnsack²,

Chen³

et al. 2005

Vis Neurosci

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Visual responses to stimulation at high temporal frequency are generally considered to result from signals that avoid light adaptive gain adjustment, simply reflecting linear summation of luminance. Under conditions of high photopic illuminance, the center of the receptive field of the cat X-cell has been shown to expand in size when stimulated at high temporal frequency, raising the possibility that there is spatiotemporal interaction in luminance summation. Here we show that this expansion maintains constant the product of the center's luminance summing area and the temporal period of luminance modulation, implying that spatial and temporal integration of luminance can be traded for one another by the X-cell center. As such the X-cell has a spatiotemporal window for luminance integration that fuses the classical concepts of a spatial window of luminance integration (Ricco's Law) with a temporal window of luminance integration (Bloch's Law). We were interested to determine whether this tradeoff between spatial and temporal summation of luminance occurs also at lower light levels, where the temporal-frequency bandwidth of the X-cell is narrower. We found that it does not. Center radius does not expand with temporal frequency under either low photopic or scotopic conditions. These results are discussed within the context of the known retinal circuitry that underlies the X-cell center for photopic and scotopic conditions.

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“…A mechanism of local center-surround processing can be approximated by ®ltering the input distribution with di erence-of-Gaussian ®lters such as were originally proposed to model the receptive ®eld structure of retinal ganglion cells (Rodieck 1965;Enroth-Cugell and Robson 1966):…”

Section: Center-surround Interactionsmentioning

confidence: 99%

“…In classical proposals, such as, for example, in Rodieck (1965) or Marr and Hildreth (1980), the center and surround contributions combine linearly to determine the cell's response. Other approaches have speci®ed visual adaptation processes that render responses sensitive to luminance ratios.…”

Section: Center-surround Interactionsmentioning

confidence: 99%

Interaction of ON and OFF pathways for visual contrast measurement

Neumann

Pessôa

Hanse

1999

Biological Cybernetics

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Abstract. We propose a novel model of visual contrast measurement based on segregated ON and OFF pathways. Two driving forces have shaped our investigation: (1) establishing a mechanism selective for sharp local transitions in the luminance distribution; (2) generating a robust scheme of oriented contrast detection. Our starting point was the architecture of early stages in the mammalian visual system. We show that the circuit behaves as a soft AND-gate and analyze the scale-space selectivity properties of the model in detail. The theoretical analysis is supplemented by computer simulations in which we selectively investigate key functionalities of the proposed contrast detection scheme. We demonstrate that the model is capable of successfully processing synthetic as well as natural images, thus illustrating the potential of the method for computer vision applications.

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Quantitative analysis of cat retinal ganglion cell response to visual stimuli

Cited by 713 publications

References 9 publications

Directional asymmetries in the length‐response profiles of cells in the feline dorsal lateral geniculate nucleus.

Directional asymmetries in the length‐response profiles of cells in the feline dorsal lateral geniculate nucleus.

Spatiotemporal integration of light by the cat X-cell center under photopic and scotopic conditions

Interaction of ON and OFF pathways for visual contrast measurement

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