Figure 1: a, A mouse taped to ECG electrodes on a plastic board positioned below the pinhole lens of the multiwire gamma camera. Figure 2: a, A mouse heart at a magnification approximating the ...

On 9to5Mac, Zac Hall breaks down how the new electrodes work in the Apple Watch Series 4 based on details published by Apple when it updated watchOS last week with the new ECG app. For now, the ECG ...