• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 46 subscribers
  • Views 872 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1298ECGFE-PDK: Can I separate the leads?

Anna Stratmann
Prodigy 40 points
Part Number: ADS1298ECGFE-PDK
Other Parts Discussed in Thread: ADS1298

Dear E2E-community,

I am currently using the ADS1298 for biometric research regarding the human ECG. I do not need a 'medical' ECG, taken at the ***. Instead I try to compare bio-electrical signals at different parts of the body. The current setting is the following: I use R, L, N, and F at the 'normal' places at the upper body to get a reference signal - that works quite well. Additionally, signales are recorded from both hands (C1 and C2) which also creates good output.

BUT, in a medical ecg, the signals from lead V1-6 (electrodes C1-6) are put in comparison to the four ***-electrodes, so the recorded signal displays the potential C1-*** and C2-***, if I am not mistaking. Is there any possibility to change the ADS-setting so that the potential is measured between C1 and C2 instead?

I figured out that I can use R+L at the hands, and that also works well, but if possible I would like to record all signals (*** and hands) in one go to avoid any changes between the measurements.

I hope I could make myself clear. Thank you in advance for your help with this.

Best, Anna

  • 0
    TI__Mastermind 38745 points
    Anna,

    Generally in ECG, the Wilson Central Terminal (WCT) is defined as (R+L+F)/3. The chest electrodes V1, V2, ... are defined as C1 - WCT, C2 - WCT, ... If you want C1 - C2, you can just compute V1 - V2. This can be done with data that you collect from the ADS1298 for the normal chest leads. The WCT portion will cancel and you will be left with the potential between the two electrodes.

    The only difference in your setup versus a traditional setup is that C1, C2, C3, ... are typically measured on the left lower thorax/upper abdomen extending from the lower part of the sternum for C1 laterally to near the end of rib 12 for C6.

    Regards,
    Brian Pisani
  • 0 in reply to Brian Pisani
    Prodigy 40 points
    Brian, thanks a lot for your help and the explanation. That really helps me a lot!
    Best, Anna