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Lovegrove, W. J.; And Others – Science, 1980
Contrast thresholds for sine-wave gratings of spatial frequencies of 2, 4, 12, and 16 cycles per degree were determined for normal and disabled readers at a range of stimulus durations. The differences in sensitivity pattern across spatial frequencies was greatest at stimulus durations approximately equal to fixation durations during reading.…
Descriptors: Contrast, Disabilities, Higher Education, Reading Diagnosis
Peer reviewed Peer reviewed
Livingstone, Margaret; Hubel, David – Science, 1988
Summarizes the anatomical, physiological, and psychological evidence related to the primate visual system. States that comparison of perceptual abilities with the electrophysiological properties of neurons may help deduce functions of visual areas. (RT)
Descriptors: Anatomy, Biological Sciences, Biology, Color