Abstract
The problem of perception is one of the most important in psychology. Its study is of the utmost significance since each and every sensory act discloses a genetic connection between the material and the ideal and, to use Lenin's expression, "The energy of an external stimulus is transformed into a fact of consciousness" [1, vol. 18, p. 46]. But research on perception is very relevant in a practical sense as well. Scientific and technical progress has created a great many professions whose basic content involves perception, recognition of visual images, and their interpretation and transformation. The principal task of some of the new professions is to create new visual images and new visual forms.