title: A noise masking experiment in grating perception at threshold: the implications on binocular summation.
mesh_terms: D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008029:Lighting; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology; D011601:Psychophysics; D012684:Sensory Thresholds / Q000502:physiology; D014792:Visual Acuity