Application of fourier analysis to the visibility of gratings
Article first published online: 1 AUG 1968
© 1968 The Physiological Society
The Journal of Physiology
Volume 197, Issue 3, pages 551–566, August 1, 1968
How to Cite
1968), Application of fourier analysis to the visibility of gratings. The Journal of Physiology, 197 doi: 10.1113/jphysiol.1968.sp008574., , (
- Issue published online: 1 AUG 1968
- Article first published online: 1 AUG 1968
- Cited By
1. The contrast thresholds of a variety of grating patterns have been measured over a wide range of spatial frequencies.
2. Contrast thresholds for the detection of gratings whose luminance profiles are sine, square, rectangular or saw-tooth waves can be simply related using Fourier theory.
3. Over a wide range of spatial frequencies the contrast threshold of a grating is determined only by the amplitude of the fundamental Fourier component of its wave form.
4. Gratings of complex wave form cannot be distinguished from sine-wave gratings until their contrast has been raised to a level at which the higher harmonic components reach their independent threshold.
5. These findings can be explained by the existence within the nervous system of linearly operating independent mechanisms selectively sensitive to limited ranges of spatial frequencies.