Laser acupuncture induced specific cerebral cortical and subcortical activations in humans.
As recent studies demonstrated, acupuncture can elicit activity in specific brain areas. This study aims to explore further the central effect using laser acupuncture. We investigated the cerebral effects of laser acupuncture at both acupoints GB43 with functional magnetic resonance imaging (fMRI). As a control condition the laser was mounted at the same acupoints but without application of laser stimulation. The group results showed significant brain activations within the thalamus, nucleus subthalamicus, nucleus ruber, the brainstem, and the Brodmann areas 40 and 22 for the acupuncture condition. No significant brain activations were observed within the placebo condition. The activations we observed were laser acupuncture-specific and predominantly ipsilateral. This supports the assumption that acupuncture is mediated by meridians, since meridians do not cross to the other side. Furthermore, we could show that laser acupuncture allows one to design a pure placebo condition.
Siedentopf
Christian M
CM
Department of Radiology II, University Hospital of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria. christian.siedentopf@fmri-easy.de
Koppelstaetter
Florian
F
Haala
Ilka Anna
IA
Haid
Veronika
V
Rhomberg
Paul
P
Ischebeck
Anja
A
Buchberger
Waltraud
W
Felber
Stephan
S
Schlager
Andreas
A
Golaszewski
Stefan M
SM
D015669:Acupuncture Points; D015670:Acupuncture Therapy; D000328:Adult; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007834:Lasers; D008279:Magnetic Resonance Imaging; D008297:Male