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conclusionvideo [2014/05/13 09:32] (current)
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|+||== Measuring electrical bio-signals with a differential amplifier ==|
|+||Biosignals are generally measured using three electrodes because we use an instrumentation amplifier: positive, negative and ground. Sometimes the negative input is connected to a group of electrodes instead to just one electrode, for example [[ecg:v1_v6|V1,...,V6]].|
|+||The electrodes here are from [[http://www.pulsemedical.co.uk/ECG-Electrodes|Pulse Medical and are standard ECG electrodes with studs]]. The cables were made from snaps (which can be bought at [[http://www.mandors.co.uk|Mandors]]). In the following clips we will use both the hand made and and the [[http://www.malemmedical.com/ultimate-ecg-easy-clip-for-stud-tab-electrodes|professional]] electrode clips.|
|+||After this general introduction we are going to show you step by step how to measure ECG and EEG:|