Which leads are abbreviated typically as channel ECG 1 and ECG 2? I want make sure about the fact in the documentation of MIT-BIH NSRDB here. They just say ECG 1 and ECG 2 but not what particularly. I think they are...--prophetes.ai

Which leads are abbreviated typically as channel ECG 1 and ECG 2? I want make sure about the fact in the documentation of MIT-BIH NSRDB here. They just say ECG 1 and ECG 2 but not what particularly. I think they are the frontal plane channel and transverse plane channel but in which order, I do not know. In their other database (MIT-BIH Arr.), #1 Channel was about MLII, but #2 Channel about V1. So I am confused. Normally, I get data which says leads are this and this. Display channels can be this and this. Etc with this device, very clear manual. Ticket: <

Answer in the ticket but it is still little open because it does say which lead is ECG1 and which ECG2

> These records are from Holter recorders and the leads are not in standard precordial positions. As a general rule one lead is approximately a V5 position or a modified lead II (recording from right pectoral area to the cardiac apex), and the other lead is generally close to a V2 position.