AUTHOR=Petryński Wacław , Staszkiewicz Robert , Szyndera Mirosław TITLE=Internal Mechanisms of Human Motor Behaviour: A System-Theoretical Perspective JOURNAL=Frontiers in Psychology VOLUME=Volume 13 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2022.841343 DOI=10.3389/fpsyg.2022.841343 ISSN=1664-1078 ABSTRACT=The authors present the conceptual model of human motor behaviour. The movement is the only observable manifestation of all psychical processes; thus, it is the only phenomenon enabling the creation of hypotheses concerning psychological foundations of human behaviour. Moreover, in the field of biology and psychology, mathematical descriptions are not eligible, and appropriate seems to be a systemic approach. The authors present system of functional information processing modalities in the human mind (modalities’ ladder, basing on neurophysiological Bernstein’s theory), and the series of processes from stimuli reception to motor response execution (stream of consciousness). They make together a super-system. Its graphical representation may be termed “Column Diagram”. The authors analyse the functioning of this super-system in various intellectual-motor operations.