Temporal sensitivities to square-wave gratings, sawtooth-wave gratings and their fundamentals: More evidence for multiple spatial frequency channels in human vision

Nagano, Takashi; Yamagami, Kiyoshi

doi:10.1016/0042-6989(82)90042-6

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1988

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“…With the odd-harmonic addition, appropriate component contrast compensation was made as described for the sum of an infinite series (Campbell and Robson, 1968;Nagano and Yamagami, 1982;Ciuffreda, Dul and Fisher, 1987;Tucker and Charman, 1987) according to the equation:…”

Section: Methodsmentioning

confidence: 99%

Accommodative accuracy to harmonically related complex grating patterns and their components

Dul

Ciuffreda

Fisher

1988

Ophthalmic Physiologic Optic

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Monocular steady-state accommodation was measured to harmonically related complex grating patterns and their components to determine the contribution of the various spatial waveforms to accommodative accuracy. Accommodative accuracy was greater for those waveforms containing summed odd-harmonic spatial components than for those waveforms with specific spatial components either removed or isolated. The results suggest that the contrast gradient produced by the summed waveforms, rather than the presence of any particular subset of spatial frequency components per se, was a critical factor for accurate accommodation.

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Section: Methodsmentioning

confidence: 99%