Masking independent of both separation and spatial frequency.
D005556:Form Perception / Q000502:physiology*; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology*; D012399:Rotation; D014792:Visual Acuity