Abstract

Previous experiments in peripheral vision have demonstrated that sub-Nyquist gratings raise threshold for detection of orthogonally-oriented test-gratings regardless of whether the test spatial frequency is above or below the Nyquist limit.¹ In the present study we examined this masking phenomenon when the test and mask have the same orientation, as occurs naturally for 1-dimensional patterns such as edges and square-wave gratings.

© 1993 Optical Society of America