Reaching for rattles: a preliminary study of contrast sensitivity in 7-10 month old infants.
Contrast sensitivity for a 3 cycles deg-1 sinusoidal grating in 7-10 month old infants was tested by presenting gratings and uniform fields on cylinders, with the former providing auditory reinforcement when the infant picked them up. The method shows that a contrast as low as 7.5% can commonly be detected at this age, compared with 1-2% for adults under comparable conditions. However, as the development of hand preferences with the task as an indicator of visual sensitivity, it is concluded that this method is not in its present form suitable for vision testing on a wide scale or in a clinical setting.
D004193:Discrimination Learning; D005556:Form Perception; D006801:Humans; D007223:Infant; D010364:Pattern Recognition, Visual; D002666:Psychology, Child; D011597:Psychomotor Performance