the line of latent propa- gating sensation along channel (LPSC) and its low impedance nature which have been proved to be two general channel phenomena previously
were determined before and after the removal of the epidermis and corneal layer by suction or the action of cantharidin. It was found that both the LPSC and its low impedance nature disappeared and regenerated in respecitive with the removal and regeneration of the epidermis.