The research show existence of innate knowledge (phylogenetic knowledge). Phylogenetic knowledge is specific for definite species and transferred in a genetical manner. This kind of knowledge takes the definite neurons or neuronal circumference funtions and in a specific sensitivity on the concrete physical or social characteristics of the envirovment. Lots of data also show that perception of objects is achieved on the basis of their solid characteristics - invariants (Biederman, 1987; Grill-Spector, Kourtzi, Kanwisher, 2001; Ishai and in., 1999 Vogels, Biederman, Bar and Lorincz, 2001). It can be supposed that the structure underlying this recognition have to be simplified on the basis of the invariants theory. The research on the imagination topic lead to a conclusion that perception and imagery shared common neural machinery at the different levels of processing (Farah, 1988; Kosslyn, Ganis, Thompson, 2003; Kosslyn, Thompson, 2000; O'Craven, Kanwisher, 2000), and that imagination is isomorphe to the physical reality. Therefore a question arises: does the phylogenetic computation mechanism exist that generates a simplified, so called basic strucure of imagery, which is pictorial and relflects the natural object of orientation in the real world. There have been two hypothesis verified in the present paper. According to the first one, the computation mechanism generates the basic structure of imagery in imagination on the basis of the characteristics encoded in a literal manner. This hypothesis was verified in the first experiment. According to the second hypothesis initial orientations of objects in the basic structure of imagery reflect the most natural and most often orientation in the physical world, that is a vertical one. This hypothesis was verified in the second experiment. The results supported both hypotheses and are among others discussed from the neuropsychology perspective.