Figure 1From: Biomedical engineering meets acupuncture - development of a miniaturized 48-channel skin impedance measurement system for needle and laser acupuncture Technical details of the newly developed acupuncture impedance measurement system. From left to right and top to bottom: Printed circuit board assembly, measurement system with grounding electrode for the wrist including a hook-and-loop fastener, sensor unit; circuit diagram; 48 spring load mounted skin electrode contact cylinders; ECG grounding electrode compared in size to the sensor part of the measurement system.Back to article page