Descriptor
| Visual Discrimination | 3 |
| Contrast | 2 |
| Visual Perception | 2 |
| Anatomy | 1 |
| Biological Sciences | 1 |
| Biology | 1 |
| Cognitive Processes | 1 |
| Color | 1 |
| Computer Oriented Programs | 1 |
| Depth Perception | 1 |
| Dimensional Preference | 1 |
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| Science | 3 |
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| Journal Articles | 3 |
| Reports - Descriptive | 3 |
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Specific Reading Disability: Differences in Contrast Sensitivity as a Function of Spatial Frequency.
Peer reviewedLovegrove, 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 reviewedWong, Eva; Weisstein, Naomi – Science, 1982
Reports effects of context that are entirely perceptual. Visual discrimination was enhanced when line segments were flashed in a region that was perceived as a figure. Discrimination was substantially degraded when the same region was seen as ground although the physical stimulus remained identical throughout figure-ground reversals. (Author/JN)
Descriptors: Cognitive Processes, Computer Oriented Programs, Discrimination Learning, Scientific Research
Peer reviewedLivingstone, 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
