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. 2010 Nov 23;9:78. doi: 10.1186/1475-925X-9-78

Figure 4.

Figure 4

First analysis of changes of impedance during contact-free violet laser stimulation. Top: Circular chart - violet laser acupuncture, details see Figure 3. Bottom: Changes in electrodermal impedance immediately following the onset of violet laser stimulation in specific registration sites only. Three channels surrounding the acupoint were randomly chosen. In this measurement, the 'on-effect' of the violet laser is clearly demonstrated.