Effect of ST36 Acupuncture on Hyperventilation-Induced CO₂ Reactivity of the Basilar and Middle Cerebral Arteries and Heart Rate Variability in Normal Subjects

Figure 2

Correlation analysis between the changes in CO₂ reactivity and the changes in CV40 before and after ST36 acupuncture. (a) A significant correlation is shown between the changes in CO₂ reactivity and the CV40 of the ipsilateral MCA (𝑃=0.041, 𝑟=0.651) and the contralateral MCA (𝑃=0.047, 𝑟=0.638). (b) A significant correlation is shown between acupuncture-mediated changes in CO₂ reactivity and the CV40 of the BA (𝑃=0.001, 𝑟=0.885).

(a)

(b)