Abstract

The concept of local scale asserts that for a given class of psychophysical measurements, performance at any two visual field locations is equated by magnifying the targets by the local scale associated with each location. Local scale has been hypothesized to be equal to cortical magnification or alternatively to the linear density of receptors or ganglion cells. Here, we show that it is possible to estimate local scale without prior knowledge about the scale or its physiological basis.

© 1987 Optical Society of America

Spatial scaling of central and peripheral contrast-sensitivity functions

Alan Johnston
J. Opt. Soc. Am. A 4(8) 1583-1593 (1987)

Peripheral hyperacuity: three-dot bisection scales to a single factor from 0 to 10 degrees

Yen L. Yap, Dennis M. Levi, and Stanley A. Klein
J. Opt. Soc. Am. A 4(8) 1554-1561 (1987)

Deviations from strict M scaling

P. Bijl, J. J. Koenderink, and A. M. L. Kappers
J. Opt. Soc. Am. A 9(8) 1233-1239 (1992)

Cortical magnification and peripheral vision

Veijo Virsu, Risto Näsänen, and Kari Osmoviita
J. Opt. Soc. Am. A 4(8) 1568-1578 (1987)

Peripheral spatial vision: limits imposed by optics, photoreceptors, and receptor pooling

Martin S. Banks, Allison B. Sekuler, and Stephen J. Anderson
J. Opt. Soc. Am. A 8(11) 1775-1787 (1991)