A phylogenetic journey through the vague and ambiguous Xth cranial nerve: A commentary on contemporary heart rate variability research

Contemporary heart rate variability research is discussed within a historical context. Implicit in this history is the discovery that the central nervous system regulates the heart and how information regarding neural regulation of the heart is imbedded in the beat-to-beat heart rate pattern. As methodologies have become more sensitive to neural regulation and as theories have expanded to integrate behavior and psychological processes with neurobiological principles, researchers are becoming better positioned to successfully understand how neurovisceral processes mediate the expression of health and disease. The contributions to this special issue describe research representing different levels of scientific inquiry and focus on different features of the complex neural feedback system that are manifested in the robust relationships between heart rate variability and several behavioral, psychological, physiological, and health processes. This article provides a commentary to these contributions.

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