The research is based on the question "Why does the physically existing and physically functioning brain "paradoxically" process information biologically or socially expediently?" After all, we know that not a single physical law is "prone" to this. The short answer to this question is as follows: it happens because certain structures of the limbic region of the brain realize the ability of living beings to subjectively evaluate the biological/social value of world’s objects and phenomena, as well as the results and ways of information processing that occur in the brain. However, if so, we should consider that despite its non-physical, namely mental essence, subjective assessment somehow “must orchestrate” (that is, cause) all physical processes in the brain that realize its informational activity. Indeed, subjective assessment is a phenomenon that usually addresses only the biological or social value of the world’s objects and phenomena (Solovіоv, 2015; Solovіоv et al., 2019). Motivation appears in the brain through subjective assessment. It is argued that this causal "paradox" is resolved within the framework of hierarchical relationships of neural networks of the brain, where neural networks of specific brain structures perform a managerial function through their implementation of managerial mental phenomena (such as subjective evaluation, emotions, decision-making). The “Bottom-Up” and “Top-Down” flows of information in the brain are described. It is suggested that control networks integrate information through mental (psychic) “tools” and, on the basis of integrated information, manage controlled executive networks for arbitrary regulation of sensory processes, memory processes and motor actions.