Fig. 1. Two-pipette stimulating and recording method.
A, 10 × phase contrast image of a normal FDB fibre impaled with two electrodes as described in text. B, 40 × magnification images of same fibre showing phase image and corresponding OGB-5N fluorescence image from the region circumscribed by the white square in A. Calibration bar is 30μm. C, surface AP from a normal mouse FDB from pipette 1 (black) and pipette 2 (grey). Internal solution contained 5mm EGTA and the external solution was normal Tyrode solution.