Single target acuity is not higher than grating acuity in a bird, the budgerigar
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چکیده
منابع مشابه
Resolution Acuity is better than Vernier Acuity
Our impressive sensitivity to vernier offsets as compared to resolution acuity has long inspired vision researchers to study the phenomena in great detail. In this study we use the test-pedestal framework to compare resolution and vernier acuity. In these experiments the test stimulus is the same for both tasks, only the pedestals differ. When thresholds are expressed in common units of test st...
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Arden grating test scores were obtained for 100 normal subjects under standardised testing conditions. While previously published ranges of interocular conguity were corroborated, a significant increase in test scores with increasing age was noted. This effect of age has not been previously reported. Physiological considerations suggest that such age dependency might have been expected. It is s...
متن کاملAssessment of Grating Acuity in Infants and Toddlers Using an Electronic Acuity Card: The Dobson Card.
PURPOSE To determine if testing binocular visual acuity in infants and toddlers using the Acuity Card Procedure (ACP) with electronic grating stimuli yields clinically useful data. METHODS Participants were infants and toddlers ages 5 to 36.7 months referred by pediatricians due to failed automated vision screening. The ACP was used to test binocular grating acuity. Stimuli were presented on ...
متن کاملInterobserver agreement for measurement of grating acuity and interocular acuity differences with the Teller acuity card procedure
Interobserver reliability of the Teller acuity card (TAC) procedure for estimating acuity and interocular acuity differences (IADs) was assessed with 342 infants and children who had been treated in a neonatal intensive care unit for preterm birth and/or perinatal complications. Subjects were tested binocularly at term and monocularly at 4, 8, 11, 17, 24, 30, 36, and 48 months corrected age wit...
متن کاملEffect of wavelength on foveal grating acuity.
Acuity-luminance relations for a grating test object were determined with red, yellow, green, and blue narrow-band chromatic illuminants for five subjects. At intermediate and high luminance levels, acuities for blue were lower than for the other chromatic illuminants in four of the five subjects. One of these subjects also showed lower asymptotic acuity for red at high luminances. The fifth su...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2019
ISSN: 0042-6989
DOI: 10.1016/j.visres.2019.04.005