Electrical Impedance of Acupuncture Meridians: The Relevance of Subcutaneous Collagenous Bands

Background: The scientific basis for acupuncture meridians is unknown. Past studies have suggested that acupuncture meridians are physiologically characterized by low electrical impedance and anatomically associated with connective tissue planes. We are interested in seeing whether acupuncture meridians are associated with lower electrical impedance and whether ultrasound-derived measures – specifically echogenic collagenous bands- can account for these impedance differences. Methods/Results: In 28 healthy subjects, we assessed electrical impedance of skin and underlying subcutaneous connective tissue using a four needle-electrode approach. The impedances were obtained at 10 kHz and 100 kHz frequencies and at three body sites- upper arm (Large Intestine meridian), thigh (Liver), and lower leg (Bladder). Meridian locations were determined by acupuncturists. Ultrasound images were obtained to characterize the anatomical features at each measured site. We found significantly reduced electrical impedance at the Large Intestine meridian compared to adjacent control for both frequencies. No significant decrease in impedance was found at the Liver or Bladder meridian. Greater subcutaneous echogenic densities were significantly associated with reduced impedances in both within-site (meridian vs. adjacent control) and between-site (arm vs. thigh vs. lower leg) analyses. This relationship remained significant in multivariabl

Étude de restes osseux en provenance de Bastelica, Corse

Rabischong P., Engel M. Étude de restes osseux en provenance de Bastelica, Corse. In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XII° Série. Tome 6 fascicule 1, 1970. pp. 1-39

EEG-coherence analyses depict functional relations during cognitive processing

Rappelsberger P, Weiss S. EEG-coherence analyses depict functional relations during cognitive processing. In: Pedotti A, Rabischong P, eds. 3rd European Conference on Engineering and Medicine, Book of Abstracts. 1995