ABSTRACT
OBJECTIVE@#To evaluate the methodological quality and reporting quality of Meta-analysis literature published by acupuncture journals included in Chinese Science Citation Database (CSCD), and to provide references and demonstration for relevant studies.@*METHODS@#The Meta-analysis literature published before December 2017 in , , and was retrieved by computer. AMSTAR was used for methodology quality evaluation, and PRISMA was used for reporting quality evaluation.@*RESULTS@#A total of 69 literature was included. Among them, the co-authorship rate was 100% and the cooperation degree was 5.45. The first authors came from 32 institutions, and 29 literature (42.0%) was funded. The cited rate was 98.6%, and averagely each paper was cited 16.3 times. The mean score of methodology quality evaluation was (7.78±1.14) points, including 14 high-quality literature (20.3%), 50 moderate-quality literature (72.5%) and 5 low-quality literature (7.2%). The average score of reporting quality evaluation was (20.33±2.36) points, including 24 relatively complete literature (34.8%), 41 literature with certain defects (59.4%) and 4 literature with serious defects (5.8%).@*CONCLUSION@#The Meta-analysis reports published by acupuncture journals in CSCD have relatively high methodological quality and reporting quality, which could provide evidence for clinical decision making, but still the quality level needed to be further enhanced according to the writing standard of Meta-analysis report. At the same time, the overall level of experimental research should be constantly improved to promote the development of evidence-based research on acupuncture and promote the formation of high-quality evidence.
Subject(s)
Humans , Acupuncture Therapy , China , Databases, Factual , Moxibustion , Periodicals as Topic , Reference Standards , PublicationsABSTRACT
Objective To study the general mechanical behavior pattern of sensing angular velocity by 3 pairs of human semicircular canals.Methods Sinusoidal head rotation of a healthy subject was simulated by finite element method to analyze the dynamic responses in the above 3 pairs of canals in the left and right inner ear.Results Compared with the complicated node displacement distribution,the volumetric strain distribution of cupula was regular.Specifically,each pair of cupulae expanded or contracted within the same amplitude with the same response frequency to the angular velocity.The ratio of absolute volumetric strain among the horizontal semicircular canal cupula (HC cupula),the anterior semicircular canal cupula (AC cupula),and the posterior semicircular canal cupula (PC cupula),was approximately 1.00∶0.80 ∶ 1.72,which kept constant.In addition,the volumetric strain of HC cupula was in phase with that of AC cupula,but showing 14.4° out of phase with the angular velocity,and 180° out of phase with that of PC cupula.Conclusions The volumetric strain of cupula can preferably characterize the directional coding function of semicircular canal,and the amplitude,frequency and phase of the cupular volumetric strain can encode those of the stimulated angular velocity,respectively.These results will lay the foundation for establishing quantitative relationship of vestibulo-ocular reflex,and provide theoretical references for quantitative assessment for vestibular function by nystagmus examination.
ABSTRACT
Objective To study the general mechanical behavior pattern of sensing angular velocity by 3 pairs of human semicircular canals.Methods Sinusoidal head rotation of a healthy subject was simulated by finite element method to analyze the dynamic responses in the above 3 pairs of canals in the left and right inner ear.Results Compared with the complicated node displacement distribution,the volumetric strain distribution of cupula was regular.Specifically,each pair of cupulae expanded or contracted within the same amplitude with the same response frequency to the angular velocity.The ratio of absolute volumetric strain among the horizontal semicircular canal cupula (HC cupula),the anterior semicircular canal cupula (AC cupula),and the posterior semicircular canal cupula (PC cupula),was approximately 1.00∶0.80 ∶ 1.72,which kept constant.In addition,the volumetric strain of HC cupula was in phase with that of AC cupula,but showing 14.4° out of phase with the angular velocity,and 180° out of phase with that of PC cupula.Conclusions The volumetric strain of cupula can preferably characterize the directional coding function of semicircular canal,and the amplitude,frequency and phase of the cupular volumetric strain can encode those of the stimulated angular velocity,respectively.These results will lay the foundation for establishing quantitative relationship of vestibulo-ocular reflex,and provide theoretical references for quantitative assessment for vestibular function by nystagmus examination.
ABSTRACT
Objective To study the general mechanical behavior pattern of sensing angular velocity by 3 pairs of human semicircular canals. Methods Sinusoidal head rotation of a healthy subject was simulated by finite element method to analyze the dynamic responses in the above 3 pairs of canals in the left and right inner ear. Results Compared with the complicated node displacement distribution, the volumetric strain distribution of cupula was regular. Specifically, each pair of cupulae expanded or contracted within the same amplitude with the same response frequency to the angular velocity. The ratio of absolute volumetric strain among the horizontal semicircular canal cupula (HC cupula), the anterior semicircular canal cupula (AC cupula), and the posterior semicircular canal cupula (PC cupula), was approximately 1.00︰0.80︰1.72, which kept constant. In addition, the volumetric strain of HC cupula was in phase with that of AC cupula, but showing 14.4° out of phase with the angular velocity, and 180° out of phase with that of PC cupula. Conclusions The volumetric strain of cupula can preferably characterize the directional coding function of semicircular canal, and the amplitude, frequency and phase of the cupular volumetric strain can encode those of the stimulated angular velocity, respectively. These results will lay the foundation for establishing quantitative relationship of vestibulo-ocular reflex, and provide theoretical references for quantitative assessment for vestibular function by nystagmus examination.