Pretty much every fitness tracker and smartwatch has an optical heart rate sensor, but they're not always perfectly accurate.

Two people with spinal cord injuries have regained the ability to walk after receiving the experimental treatment.

Small sticky patches, called electrodes, are put on the patient's arms, legs and chest and connected by wires to the ECG machine, which picks up and records the electrical signals, which can then ...

Becker says Patch EKG has an all-in-one design with built-in lead wires attached to pre-positioned electrodes for easier placement on the chest to eliminate electrode misplacement errors.