Spatial frequency tuning studies: weighting as a prerequisite for describing psychometric curves by probability summation.
D005556:Form Perception / Q000502:physiology*; D006801:Humans; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010507:Periodicity; D011336:Probability; D011594:Psychometrics; D012160:Retina / Q000502:physiology*; D014792:Visual Acuity