Figure 1From: Deqi sensations without cutaneous sensory input: results of an RCT Sham laser device. In the device used during sham laser acupuncture, laser irradiation was deactivated by the manufacturer (Seirin, 3B Scientific GmbH, Hamburg, Germany). The visual (red light, approximately 587 nm) and acoustic functions were maintained and therefore double-blinding was achieved.Back to article page