(Untitled)

[zzyzx_xyzzy]

Wandering around the twenty-year-old papers again trying to find out if anyone measured the variation of contrast sensitivity with spatial frequency and retinal eccentricity for moving gratings.

Banks et al M. S. Banks, A. B. Sekuler, and S. J. Anderson. Peripheral spatial vision: limits imposed by optics, photoreceptors, and receptor pooling. J

Comments

[randomdreams]

I don't know about retinal eccentricity, but I know I've read research papers on sensitivity to frequency with motion of either the light (when being blinked in the khz-mhz range) or gratings between the viewer and the light. However, that's on work machines not at home, but I'll try to remember to look on Monday.

[zzyzx_xyzzy]

Khz? Weird.

All these old papers varied the spatial frequency of the gratings by physically moving the display oscilloscope closer or farther from the observer, or by swapping out lenses in their stacks of optics. Today you'd do that by telling the computer to display a grating with more or fewer pixels per cycle. I'd have thought you could do that just as well with the display oscilloscopes, too, though.

[mhnicholson]

Marty Banks (who you cite above) used to work with a guy named Pat Bennett at UCB in the mid 80s. He was always talking about grating and orientation and how flat the neural transfer function is. If you can do an author search against him it might turn something up.

[zzyzx_xyzzy]

The answers, apparently, were Virsu, Rovamo, Laurinen, and Näsänen, 1982, or Wright and Johnston 1983.

As it turned out, the Anderson papers above were actually more serindipitously informative as they alerted me to a subtlety with the bandwidth of the channels changing as a function of spatial frequency.