Discrimination of changes in the slope of the amplitude spectra of complex visual images by human observers may require comparison of contrast between different spatial-frequency bands
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@InProceedings\{PTL1998, author = "C. Alejandro Parraga and D.J. Tolhurst and J.T.C. Lee", title = "Discrimination of changes in the slope of the amplitude spectra of complex visual images by human observers may require comparison of contrast between different spatial-frequency bands", booktitle = "Journal of Physiology", volume = "506", pages = "86P--86P", year = "1998", url = "http://cic.uab.cat/Public/Publications/1998/PTL1998" }