Stimulus luminance and the spatial acuity of domestic fowl (Gallus g. domesticus)

Gover, N., Jarvis, J., Abeyesinghe, S.M. and Wathes, C.M. 2009. Stimulus luminance and the spatial acuity of domestic fowl (Gallus g. domesticus). Vision Research: an international journal for functional aspects of vision. 49 (23), pp. 2747-2753.

TitleStimulus luminance and the spatial acuity of domestic fowl (Gallus g. domesticus)
AuthorsGover, N., Jarvis, J., Abeyesinghe, S.M. and Wathes, C.M.
Abstract

The luminance dependence of spatial acuity in domestic fowl was measured directly over stimulus luminances ranging from 0.06 to 57.35 cd m−2. At the highest luminance, acuity was around 6.5 c deg−1, in agreement with previous studies in this species. As stimulus luminance decreased, acuity fell with increasing rate to 3.2 c deg−1 at 0.06 cd m−2, following the same shape as acuity functions for other mammalian and avian species. These findings suggest that the rod–cone transition for domestic fowl is between 0.45 and 1.79 cd m−2. Over the photopic range from 1.79 to 57.35 cd m−2 the change of acuity for fowl was 1%, compared with 32% for humans. For domestic fowl, the Rovamo–Barten MTF model of contrast sensitivity accounted for the behaviour of acuity as a function of luminance down to mesopic levels.

JournalVision Research: an international journal for functional aspects of vision
Journal citation49 (23), pp. 2747-2753
ISSN0042-6989
YearNov 2009
PublisherPergamon
Digital Object Identifier (DOI)doi:10.1016/j.visres.2009.08.011
Publication dates
PublishedNov 2009

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