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System identification algorithm analysis of acupuncture effect on mean blood flux of contralateral hegu acupoint.

Wang G, Han J, Litscher G, Zhang W - Evid Based Complement Alternat Med (2012)

Bottom Line: Conclusions and Significance.This paper indicates that the Hegu acupoint has lateralized specificity.After stimulating the ipsilateral Hegu acupoint, symmetry breaking will be produced in contrast to contralateral Hegu acupoint stimulation.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Engineering, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China.

ABSTRACT
Background. Acupoints (belonging to 12 meridians) which have the same names are symmetrically distributed on the body. It has been proved that acupoints have certain biological specificities different from the normal parts of the body. However, there is little evidence that acupoints which have the same name and are located bilaterally and symmetrically have lateralized specificity. Thus, researching the lateralized specificity and the relationship between left-side and right-side acupuncture is of special importance. Methodology and Principal Findings. The mean blood flux (MBF) in both Hegu acupoints was measured by Moor full-field laser perfusion imager. With the method of system identification algorithm, the output distribution in different groups was acquired, based on different acupoint stimulation and standard signal input. It is demonstrated that after stimulation of the right Hegu acupoint by needle, the output value of MBF in contralateral Hegu acupoint was strongly amplified, while after acupuncturing the left Hegu acupoint, the output value of MBF in either side Hegu acupoint was amplified moderately. Conclusions and Significance. This paper indicates that the Hegu acupoint has lateralized specificity. After stimulating the ipsilateral Hegu acupoint, symmetry breaking will be produced in contrast to contralateral Hegu acupoint stimulation.

No MeSH data available.


Procedure of acupuncture and mean blood flux measurement. Pre: pre acupuncture; Post, post acupuncture; IN: insert needle; SA: stop acupuncture; SR: slowly rotate the needle every five minutes; mi  (i = 1,2, 3,…, 60): mean blood flux of Hegu acupoint at a specific time point.
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fig2: Procedure of acupuncture and mean blood flux measurement. Pre: pre acupuncture; Post, post acupuncture; IN: insert needle; SA: stop acupuncture; SR: slowly rotate the needle every five minutes; mi  (i = 1,2, 3,…, 60): mean blood flux of Hegu acupoint at a specific time point.

Mentions: Before arrival to the laboratory, subjects were placed in a temperature-controlled room (24–26°C) as a resting state for 60 minutes. Measurements of skin blood perfusion were carried out using Moor full-field laser perfusion imager (moor FLPI, Moor Instruments Ltd, UK). Before recording, both hands were immobilized with a cylindrical object to ensure positioning. The measurement parameters were as follows: high resolution/250 frames; number of images = 10; exposure time = 8.3 ms; time interval = 10 s. Measurements were carried out every 30 minutes over a total of 180 minutes. During the experiment, the laboratory room was kept in dark light condition, and the protocol for measurement operation was abided strictly. The measurement process is illustrated in Figure 2.


System identification algorithm analysis of acupuncture effect on mean blood flux of contralateral hegu acupoint.

Wang G, Han J, Litscher G, Zhang W - Evid Based Complement Alternat Med (2012)

Procedure of acupuncture and mean blood flux measurement. Pre: pre acupuncture; Post, post acupuncture; IN: insert needle; SA: stop acupuncture; SR: slowly rotate the needle every five minutes; mi  (i = 1,2, 3,…, 60): mean blood flux of Hegu acupoint at a specific time point.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3368203&req=5

fig2: Procedure of acupuncture and mean blood flux measurement. Pre: pre acupuncture; Post, post acupuncture; IN: insert needle; SA: stop acupuncture; SR: slowly rotate the needle every five minutes; mi  (i = 1,2, 3,…, 60): mean blood flux of Hegu acupoint at a specific time point.
Mentions: Before arrival to the laboratory, subjects were placed in a temperature-controlled room (24–26°C) as a resting state for 60 minutes. Measurements of skin blood perfusion were carried out using Moor full-field laser perfusion imager (moor FLPI, Moor Instruments Ltd, UK). Before recording, both hands were immobilized with a cylindrical object to ensure positioning. The measurement parameters were as follows: high resolution/250 frames; number of images = 10; exposure time = 8.3 ms; time interval = 10 s. Measurements were carried out every 30 minutes over a total of 180 minutes. During the experiment, the laboratory room was kept in dark light condition, and the protocol for measurement operation was abided strictly. The measurement process is illustrated in Figure 2.

Bottom Line: Conclusions and Significance.This paper indicates that the Hegu acupoint has lateralized specificity.After stimulating the ipsilateral Hegu acupoint, symmetry breaking will be produced in contrast to contralateral Hegu acupoint stimulation.

View Article: PubMed Central - PubMed

Affiliation: Department of Biomedical Engineering, Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China.

ABSTRACT
Background. Acupoints (belonging to 12 meridians) which have the same names are symmetrically distributed on the body. It has been proved that acupoints have certain biological specificities different from the normal parts of the body. However, there is little evidence that acupoints which have the same name and are located bilaterally and symmetrically have lateralized specificity. Thus, researching the lateralized specificity and the relationship between left-side and right-side acupuncture is of special importance. Methodology and Principal Findings. The mean blood flux (MBF) in both Hegu acupoints was measured by Moor full-field laser perfusion imager. With the method of system identification algorithm, the output distribution in different groups was acquired, based on different acupoint stimulation and standard signal input. It is demonstrated that after stimulation of the right Hegu acupoint by needle, the output value of MBF in contralateral Hegu acupoint was strongly amplified, while after acupuncturing the left Hegu acupoint, the output value of MBF in either side Hegu acupoint was amplified moderately. Conclusions and Significance. This paper indicates that the Hegu acupoint has lateralized specificity. After stimulating the ipsilateral Hegu acupoint, symmetry breaking will be produced in contrast to contralateral Hegu acupoint stimulation.

No MeSH data available.