The results of our previous works demonstrated that the low skin impedance points (LSIPs)basically distributed along the meridian courses.In order to further clarify what extent LSIPs distributed along the meridians and the feature of distribution of LSIPs in different part of the body

the Three Yang Meridians of Foot as well as Ren and Du Meridians were studied in this work once again

Twenty five volunteers were under observation.As known to all

the Three Yang Meridians of Foot

which travel over several body regions

are the longest three with most complicated courses

among the Twelve Normal Mc- ridians.Ren and Du meridians

which travel along the anterior and posterior median line of the trunk respectively

are the representative of the Eight Extra Meridians.Regardless of their particular travelling courses

the overwhelming majority of LSIPs located right on or within 5 mm bilaterally to their courses. It could be found in non-meridian area only in a few cases.The results of observaton on the back is especially to be noticed.Evidently

LSIPs appeared randomly when the exploring electode moved forward from one side of the back

crossed 5 meridians in sucession

to another side.Even so

viewing the situation as a whole

LSIPs still concentrated along 5 bands

basically coincided with the course of Du Meridian and Three Yang Meridians of Foot.The results further confirmed that LSIPs really distributed along the meridian courses in the main.