The problem of space-time relationships and their perception by human and animal sense organs and brain, developed by A. A. Ukhtomskiy in his study of the dominant as a systemic behavior reaction, has not been sufficiently studied. His ideas concerning the chronotope were scattered in various articles and monographs. Unfortunately he didnt systematize them and they have been almost unnoticed by physiologists, psychologists, and philosophers. This article tries to systematize his published and unpublished material on the chronotope, and to concisely characterize the dominant principle and compare his reasoning concerning the interaction between the dominant and perception of the chronotope by human and animal sense organs and brain.