Sensitivity to global form in glass patterns after early visual deprivation in humans
نویسندگان
چکیده
منابع مشابه
Sensitivity to global form in glass patterns after early visual deprivation in humans
To compare the effects of early monocular versus early binocular deprivation on the perception of global form, we assessed sensitivity to global concentric structure in Glass patterns with varying ratios of paired signal dots to noise dots. Children who had been deprived by dense congenital cataracts in one (n=10) or both (n=8) eyes performed significantly worse than comparably aged children wi...
متن کاملRepeated measurements of contrast sensitivity reveal limits to visual plasticity after early binocular deprivation in humans.
Contrast sensitivity improves in visually normal children until 7 years of age and is impaired in children who experienced early visual deprivation from bilateral congenital cataracts. Here, we investigated whether the deficits after early visual deprivation change during childhood by retesting the contrast sensitivity of seven patients treated for bilateral congenital cataract who had been fir...
متن کاملSparing of sensitivity to biological motion but not of global motion after early visual deprivation.
Patients deprived of visual experience during infancy by dense bilateral congenital cataracts later show marked deficits in the perception of global motion (dorsal visual stream) and global form (ventral visual stream). We expected that they would also show marked deficits in sensitivity to biological motion, which is normally processed in the superior temporal sulcus via input from both the do...
متن کاملDeficits in sensitivity to spacing after early visual deprivation in humans: a comparison of human faces, monkey faces, and houses.
Department of Ophthalmology The Hospital for Sick Children Toronto, Ontario, Canada M5G 1X8 ABSTRACT: Early visual deprivation caused by bilateral congenital cataracts produces deficits in discriminating faces that differ in the spacing of features, but not in feature shape (Le Grand et al. [2001] Nature 410: 810). We investigated whether these deficits are specific to human faces by testing pa...
متن کاملA window on the normal development of sensitivity to global form in Glass patterns.
We studied the development of sensitivity to global form in 6-year-olds, 9-year-olds, and adults (n = 24 in each group) using Glass patterns with varying ratios of paired signal dots to noise dots. The developmental pattern was similar whether the global structure within the Glass patterns was concentric or parallel. Thresholds were equally immature for both types of pattern at 6 years of age (...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Vision Research
سال: 2002
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(02)00041-x