Early organization of the nonlinear right brain and development of a predisposition to psychiatric disorders

Abstract

The concepts of self-organization, state changes, and energy flow are central to dynamic systems theory. In this work I suggest that to apply these general principles to the study of normal and abnormal development, these constructs must be specifically defined in reference to current knowledge of brain development. Toward that end, I present an overview of the properties of self-organizing developmental systems, and then propose a model of attachment dynamics as synchronized energy exchanges that cocreate nonlinear changes of state, discuss the roles of bioamines and energy-generating brain mitochondria in state regulation, and describe the energy-dependent imprinting of synaptic connectivity and neural circuitry in the infant brain. In this application of nonlinear concepts to developmental models of both resistance against and vulnerability to mental disorders, particular emphasis is placed upon the experience-dependent maturation of a system in the orbital prefrontal cortex that regulates psychobiological state and organismic energy balance. This frontolimbic system is expanded in the nonlinear right hemisphere that generates stress-regulating coping strategies, and it serves as the hierarchical apex of the limbic and autonomic nervous systems. Early forming microstructural alterations and energetic limitations of this regulatory system are suggested to be associated with a predisposition to psychiatric disorders.