Comparison of Acupuncture Effect on Blood Perfusion between Needling Nonacupoint on Meridian and Needling Nonacupoint off Meridian

Figure 6

An illustration of acupuncture effect related with acupoints and meridians. There is a descending of effect from acupoint both along meridian and perpendicular to the meridian while the falling gradient is smooth along the meridian than perpendicular to the meridian.