21. This is repeated 10 times . ( Measures visual perception and spatial relationships .) 22. Gratings are also used extensively in research into visual perception . 23. The traditional view of visual perception holds that attention is fundamental to visual processing. 24. One tool for studying visual perception is by looking at how people process optical illusions. 25. He published articles and books on the history of psychology, magical thinking and visual perception . 26. As many as one in four children have visual perception problems, according to the college. 27. Of particular interest to Gibson was the effect flying an aircraft had on visual perception . 28. This is related to the role of visual perception and cognition in human information processing. 29. He continued his psychophysical studies of human visual perception . 30. Hallucination is defined as visual perception without external stimulation.
