Figure 3
From: Cerebrovascular mental stress reactivity is impaired in hypertension
Representative examples of carotid artery diameter in a normal and a hypertensive subject. Carotid artery diameter increased after mental stress compared to baseline in the normal subject (top panels) and decreased in response to mental stress compared to baseline in the hypertensive subject (bottom panels). Carotid artery diameter was an average of 10 measurements at the onset of QRS complex.