An improvement on the adhesive electrode recording device

: An improved device of the adhesive electrode for recording the bioelectrical potential of animal's syncytial tissue is described in this paper. The main feature of the new device is to place a small chamber between the syringe for building negative pressue and the adhesive electrode. This chamber can keep the electric connection between amplifier and the tissue being recorded, and be placed near the tissue. The negative pressure can be conducted from the syringe by a plastic tube, so the syringe can be placed in any place where it doesn't affect the experiment. By using this new device, good results can be achieved when bioelectrical potential of hearts or gastric muscle of molluscan snails or frogs etc. is recorded. This simple and easy-operating device is practically valuable on studies of the normal functions and pharmacological effects in small animal's syncytial tissues such as heart, and gastric muscle.