منابع مشابه
Running Head: SPATIAL CONTRAST SENSITIVITY IN AUTISM Spatial Contrast Sensitivity in Adolescents with Autism Spectrum Disorders
Adolescents with Autism Spectrum Disorders (ASD) and typically developing (TD) controls underwent a rigorous psychophysical assessment that measured contrast sensitivity to seven spatial frequencies (0.5 to 20 cycles/degree). A contrast sensitivity function (CSF) was then fitted for each participant, from which four measures were obtained: visual acuity, peak spatial frequency, peak contrast se...
متن کاملComparative neurophysiology of spatial luminance contrast sensitivity
The luminance contrast sensitivity function has been investigated using behavioral and electrophysiological methods in many vertebrate species. Some features are conserved across species as a shape of the function, but other features, such as the contrast sensitivity peak value, spatial frequency contrast sensitivity peak, and visual acuity have changed. Here, we review contrast sensitivity acr...
متن کاملSpatial contrast sensitivity of the tree shrew.
Spatial contrast sensitivity functions (CSFs) were measured for 3 tree shrews. Our two-alternative forced-choice discrimination paradigm required the animals to discriminate a vertical sine-wave luminance grating from a homogeneous field of the same size (16 degrees) and mean luminance (35 cd/m2). Spatial frequencies tested ranged from 0.1 to 2.0 c/deg and grating contrast was varied trial-by-t...
متن کاملSpatial frequency adaptation can enhance contrast sensitivity.
A~~ct-Adaptation to a high-contr~t sinusoid& ium~nan~ grating produces a temporary, bandlimited loss in sensitivity centered around the adaptation frequency. The decrease appears to be both narrower and more symmetrical than earlier reports suggest. The effect falls to zero by f f 1 octave and is not reliably present from f f 1 octave to f k 2 octaves. Enhancement of contrast sensitivity occurs...
متن کاملSpatial contrast sensitivity in benign intracranial hypertension.
Spatial Contrast Sensitivity (CS) was studied in 20 patients with benign intracranial hypertension (BIH). At presentation CS loss was found in 43% of the eyes, and impairment of visual acuity attributed to BIH in only 16%. Nine patients had blurred vision or visual obscurations, all of whom had abnormal CS. The clinical application of CS measurement in BIH for monitoring the progression or regr...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1978
ISSN: 0007-1161
DOI: 10.1136/bjo.62.4.197