Summary
The relationship between the variance and mean rate of discharges of simple cells in the cat striate cortex has been examined when mean rate was varied by changing either stimulus spatial frequency or contrast. In both cases, the variance was related to the mean discharge rate by an exponent of about 1.15; the relation was thus roughly linear. The discharge variance was on average 1.7 times the mean rate for data obtained from measurements of the neurones' spatial frequency tuning curves, and 1.48 times the mean for data from the response-contrast determination. However, this difference was not statistically significant.
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References
Dean AF (1981) The relationship between response amplitude and contrast for cat striate cortical neurones. J Physiol (Lond) 318: 413–427
Gilbert CD (1977) Laminar differences in receptive field properties in cat primary visual cortex. J Physiol (Lond) 268: 391–421
Henry GH, Bishop PO, Tupper RM, Dreher B (1973) Orientation specificity and response variability of cells in the striate cortex. Vision Res 13: 1771–1779
Hubel DH, Wiesel TN (1962) Receptive fields, binocular integration and functional architecture in the cat's visal cortex. J. Physiol (Lond) 160: 106–154
LeVay S, Gilbert CD (1976) Laminar pattern of geniculocortical projection in the cat. Brain Res 113: 1–19
Merrill EG, Ainsworth A (1972) Glass-coated platinum-plated tungsten micro-electrodes. Med Biol Eng 10: 662–672
Movshon JA, Tolhurst DJ (1976) The use of a digital computer in the study of neuronal properties in the visual system. J Physiol (Lond) 249: 56–57P
Movshon JA, Thompson ID, Tolhurst DJ (1978) Spatial summation in the receptive fields of simple cells in cat's striate cortex. J Physiol (Lond) 283: 53–77
Tolhurst DJ, Movshon JA, Thompson ID (1981) The dependence of response amplitude and variance of cat visual cortical neurones on stimulus contrast. Exp Brain Res 41: 414–419
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This work was partially supported by an MRC project grant to D.J. Tolhurst and by the Wellcome Trust
Recipient of an MRC Research Scholarship
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Dean, A.F. The variability of discharge of simple cells in the cat striate cortex. Exp Brain Res 44, 437–440 (1981). https://doi.org/10.1007/BF00238837
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DOI: https://doi.org/10.1007/BF00238837