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Review
. 1993 Sep;114(2):296-322.
doi: 10.1037/0033-2909.114.2.296.

Cardiac psychophysiology and autonomic space in humans: empirical perspectives and conceptual implications

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Review

Cardiac psychophysiology and autonomic space in humans: empirical perspectives and conceptual implications

G G Berntson et al. Psychol Bull. 1993 Sep.

Abstract

Contemporary findings reveal that autonomic control of dually innervated visceral organs does not lie along a single continuum extending from parasympathetic to sympathetic dominance. Rather, a bivariate autonomic space bounded by sympathetic and parasympathetic axes is the minimal representation necessary to capture the modes of autonomic control. We here empirically instantiate a quantitative bivariate model for the chronotropic control of the heart in humans. This model provides a more comprehensive characterization of psychophysiological response than simple measures of end-organ state and permits a differentiation of behavioral states and processes that would otherwise remain obscure. The model also illuminates and subsumes general principles such as the law of initial values and reveals a fundamental physiological rationale for the selection of heart period over heart rate as a metric for cardiac chronotropy. The present article also considers strategies for psychophysiological investigations within the autonomic space model, the limitations of these methods, and analytical tools for assessing their validity.

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