Effect of psychological stress on interpersonal cardiac synchronization.
Abstract
Physiological synchronization may occur during this type of interaction. In addition, observing or interacting with someone experiencing stress can generate physiological changes in the observer. The aim of this study was to evaluate the effect of psychological stress on interpersonal cardiac synchronization when people do not interact directly. Seventy-six healthy people with an average age of 18.6 years participated. Cardiac activity was assessed in a baseline and a stress-evoked condition. The synchronization of the interbeat intervals was analyzed by dyads, cross-correlation and mutual information (MI) analyses were used. Comparison between the two evaluation conditions was performed using a T-test. A total of 2850 dyads were formed, only in MI significant differences were found with a reduction of MI in the stress condition. Psychological stress reduced physiological synchronization, although this reduction was only present when considering nonlinear analyses.
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References
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