FIGURE 1.

Speed of heart rate recovery after standing by thalamic volume tertile. The hemodynamics of the heart rate response to orthostatic challenge for the first 110 s frame poststanding is presented per thalamic volume tertile. The first tertile represents individuals with smaller thalamic volume; the third tertile, individuals with larger thalamic volume. The estimates of the linear mixed effects model were derived controlling for head size, age, sex, education, BMI, baseline BP, CVDEs, use of AHM, diabetes mellitus, smoking, alcohol intake, TUG, physical exercise and depression. Error bars represent the 95% confidence intervals. As can be seen, individuals with larger thalamic volume (third tertile) are characterized by a steeper initial increase in heart rate and a faster return toward baseline (or steeper drop)