Phase synchronization of hemodynamic variables and respiration during mental challenge

►Phase synchronization (PS) of LF-components (LF): not found related to respiration. ►PS of LF: between R-R and blood pressure no change between rest and mental stress. ►PS of HF-components: decreases during mental stress for R-R and respiration. ►PS of HF-components: decreases during mental stress for R-R and systolic BP. ►PS of HF-components: decreases during mental stress for respiration and systolic BP.