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Integration regions for vernier acuity in the cat: Comparative aspects of cortical scaling

Published online by Cambridge University Press:  02 June 2009

M. A. Berkley
M. A. Berkley
Affiliation:
Psychobiology/Neuroscience Program, Florida State University, Tallahassee
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Abstract

The spatial region involved in vernier acuity (integration region) was behaviorally determined in cats and compared with published human data and cortical scaling parameters for the two species. Integration region was estimated from vernier thresholds obtained with: (1) gaps of various sizes between the contiguous ends of the offset contours (gap effects); and (2) irrelevant contours placed at various distances from the vernier offset (interference effects). The gap studies showed that thresholds decreased as the gap grew from 0 to 4–7 min but then increased progressively with separations greater than 7 min. In the interference studies, thresholds were increased 2–6 times when the irrelevant contours were located within 40 min of the offset. Comparing these data with available human measures showed large species differences. Converting the interference distances for both species into cortical distances using published estimates of cortical magnification factor did not resolve the discrepancy. However, a comparison of the cat data with published human data, taken at an eccentricity at which the estimated human cortical magnification factor equals that of the cat, i.e. 7 deg, showed the effects of gap size and interference distance on vernier thresholds to be remarkably similar between the two species. This similarity supports the hypothesis that positional acuity depends upon mechanisms in striate cortex, and also suggests that such acuity may be mediated by a generic neural mechanism common to mammals.

Keywords

Vernier acuityInterference effectsCatCortical scalingEccentricity
Type
Research Article
Information
Visual Neuroscience , Volume 2 , Issue 5 , May 1989 , pp. 473 - 482
Copyright
Copyright © Cambridge University Press 1989

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References

Anderson, P.A., Olivarria, J. & Van Sluyters, R.C. (1988). The overall pattern of ocular dominance bands in cat visual cortex. Journal of Neuroscience 8, 2183–2200.CrossRefGoogle ScholarPubMed
Barlow, H. (1979). Reconstructing the visual image in space and time. Nature 279, 189–190.CrossRefGoogle ScholarPubMed
Belleville, S. & Wilkinson, F. (1986). Vernier acuity in the cat: its relation to hyperacuity. Vision Research 26, 1263–1271.CrossRefGoogle ScholarPubMed
Berkley, M.A. (1970). Visual discriminations in the cat. In Animal Psychophysics, ed. Stebbins, W., pp. 231–248. New York: Appleton-Century-Crofts.Google Scholar
Berkley, M.A. (1979). A system for behavioral evaluation of the vision capacities of cats. Behavioral Research Methods and Instrumentation 11, 545–548.CrossRefGoogle Scholar
Berkley, M. & Bush, R. (1983). Intracortical processing of visual contour information in cats. Experimental Brain Research 50, 397–407.Google ScholarPubMed
Berkley, M. & Sprague, J. (1979). Striate cortex and acuity functions in the cat. Journal of Comparative Neurology 187, 679–702.CrossRefGoogle ScholarPubMed
Bloom, M. & Berkley, M. (1977). Visual acuity and the near point of accomodation in cats. Vision Research 17, 723–730.CrossRefGoogle Scholar
Cowey, A. & Rolls, E. (1974). Human cortical magnification factor and its relation to visual acuity. Experimental Brain Research 21, 447–454.CrossRefGoogle ScholarPubMed
Crick, F., Marr, D. & Poggio, T. (1981). An information processing approach to understanding the visual cortex. In The Organization of the Cerebral Cortex, ed. Schmitt, F., Worden, F., Adelman, G. & Dennis, S., pp. 505–553. Cambridge, Massachusetts: MIT Press.Google Scholar
Dow, B.M., Snyder, A.Z., Vautin, R. & Bauer, R. (1981). Magnification factor and receptive field size in foveal striate cortex of the monkey. Experimental Brain Research 44, 213–228.Google ScholarPubMed
Fahle, M. & Poggio, T. (1981). Visual hyperacuity: spatiotemporal interpolation in human vision. Proceedings of the Royal Society B (London) 213, 451–477.Google ScholarPubMed
Hitchcock, P. & Hickey, T. (1980). Ocular dominance columns: evidence for their presence in humans. Brain Research 182, 176–179.CrossRefGoogle ScholarPubMed
Hubel, D. & Freeman, D. (1977). Projection into the visual field of ocular dominance columns in macaque monkey. Brain Research 122, 336–343.CrossRefGoogle ScholarPubMed
LeVay, S., Connolly, M., Houde, J. & van Essen, D. (1985). The complete pattern of ocular dominance stripes in the striate cortex and visual field of the macaque monkey. Journal of Neuroscience 5, 486–501.CrossRefGoogle ScholarPubMed
Levi, D., Klein, S. & Aitsebaomo, A. (1985). Vernier acuity, crowding, and cortical magnification. Vision Research 25, 963–977.CrossRefGoogle ScholarPubMed
Levi, D., Klein, S. & Yap, Y.L. (1988). “Weber's law” for position: unconfounding the role of separation and eccentricity. Vision Research 28, 597–603.CrossRefGoogle ScholarPubMed
Murphy, K., Mitchell, D. & Jones, D. (1987). Vernier acuity of amblyopic cats. Investigative Ophthalmology and Visual Science (Suppl.) 28, 102.Google Scholar
Morgan, M. & Watt, R. (1984). Spatial-frequency interference effects and interpolation in vernier acuity. Vision Research 24, 1911–1919.CrossRefGoogle ScholarPubMed
Perry, V. & Cowey, A. (1985). The ganglion cell and cone distributions in the monkey's retina: implications for cortical magnification factors. Vision Research 25, 1795–1810.CrossRefGoogle Scholar
Rovamo, J. & Virsu, V. (1979). An estimation and application of the human cortical magnification factor. Experimental Brain Research 37, 495–510.CrossRefGoogle ScholarPubMed
Schein, S. & de Monasterio, F. (1987). Mapping of retinal and genieulate neurons onto striate cortex of macaque. Journal of Neuroscience 7, 996–1009.CrossRefGoogle ScholarPubMed
Shatz, C., Linstrom, S. & Wiesel, T. (1977). The distribution of afferents representing the right and left eyes in the cat's visual cortex. Brain Research 131, 103–116.CrossRefGoogle ScholarPubMed
Tusa, R.J., Palmer, L.A. & Rosenquist, A.C. (1978). The retinotopic organization of area 17 (striate cortex) in the cat. Journal of Comparative Neurology 177, 213–236.CrossRefGoogle ScholarPubMed
van Buren, J.M. (1963). The Retinal Ganglion Cell Layer. Springfield, Illinois: Charles Thomas.Google Scholar
Westheimer, G. (1975). Visual acuity and hyperacuity. Investigative Ophthalmology 14, 570–572.Google ScholarPubMed
Westheimer, G. (1981). Visual hyperacuity. In Progress in Sensory Physiology, vol. I. ed. Autrum, H., Ottoson, D., Perl, E. & Schmidt, R., pp. 1–30. New York: Springer-Verlag.Google Scholar
Westheimer, G. (1982 a). The spatial grain of the peri-foveal visual field. Vision Research 22, 157–162.CrossRefGoogle Scholar
Westheimer, G. (1982 b). Do ocular-dominance columns set spatial limits for hyperacuity processing? Vision Research 22, 1349–1352.CrossRefGoogle ScholarPubMed
Westheimer, G. & Hauske, G. (1975). Temporal and spatial interference with vernier acuity. Vision Research 15, 1137–1141.CrossRefGoogle ScholarPubMed
Westheimer, G. & McKee, S. (1977). Spatial configurations for visual hyperacuity. Vision Research 17, 941–947.Google ScholarPubMed
Weymouth, F., Andersen, E. & Averill, H. (1923). Retinal mean local sign: a new view of the relation of the retinal mosaic to visual perception. American Journal of Physiology 63, 410–411.Google Scholar
Wong, R.O.L. & Hughes, A. (1987). The morphology, number, and distribution of a large population of confirmed displaced amacrine cells in the adult cat retina. Journal of Comparative Neurology 255, 159–177.CrossRefGoogle ScholarPubMed
Yap, Y.L., Levi, D.M. & Klein, S.A. (1987). Peripheral hyperacuity: three-dot bisection scales to a single factor from 0–10 deg. Journal of the Optical Society of America A4, 1554–1561.CrossRefGoogle Scholar