J Tradit Chin Med. 1998 Jun; 18(2): 140-5.

A study on visual evoked potential to show the relationship between the eyes and the twelve regular channels.

Duan J, Zhou H, Chen X, Pan X, Yuan X, Li X, Xiao Y, Hu X.

Chengdu University of Traditional Chinese Medicine and Pharmacy.

The visual electrophysiologic method was used to investigate the relationship between the eyes and the 12 regular channels. The values of the latent period and the amplitude of P100 wave were calculated and compared statistically. The results show that: 1) The eyes and the 12 regular channels are closely related, no matter whether the channels are classically associated with the eyes or not, while the control (non-channel)/ point has no such relationship; 2) the degrees of relationship between the eyes and the 12 regular channels vary significantly; and 3) acupuncture at the 12 regular channels induces different effects on the visual evoked potential that the Urinary Bladder Channel presents a facilitation effect whereas all the other channels chiefly show an inhibitory effect.