The Fulcrum Principle Between Parasympathetic and Sympathetic Peripheral Systems: Auditory Noise Can Modulate Body’s Peripheral Temperature

Abstract

The Fulcrum principle represents a mechanism that improves our capability to extract information from the external world. It describes the interaction between at least two physiological signals, namely excitatory and facilitation. The excitatory signal can be present in any sensory system, motor, or reflex mechanism and normally is too weak to be detected by the central nervous system and/or to enact a change on the physiological, behavioral, cognitive, etc., state of a human subject. Simultaneously, the facilitation signal can be present in any sensory system, motor or reflex mechanism and it is its energy and frequency content that may create a general activation between the central nervous system and peripheral nervous systems. Consequently, the excitatory signal can be detected and/or the physiological, behavioral, cognitive, etc., state of a human subject can be changed. Herein, we present an example of such principle where auditory noise can induce transitions between sympathetic and parasympathetic nervous systems, which are part of the autonomic nervous system.