Effects of acupuncture at the Hoku acupoint on the pulsatile laser Doppler signal at the heartbeat frequency
作者： Hsin Hsiu , Wei-Chen Hsu , Chia-Liang Hsu , Ming-Yie Jan , Yuh-Ying Wang-Lin
DOI: 10.1007/S10103-008-0610-Y
关键词:
摘要: We aimed to assess the effects of acupuncture by analyzing alternating current (AC) component skin blood-flow signals (around heartbeat frequency) simultaneously recorded at Hoku acupoint, which is an important acupoint in oriental medicine, and two nearby non-acupoints following stimulation (AS). Laser Doppler flowmetry were measured 28 experiments on nine volunteers. Each experiment involved recording a 20-min control-data sequence sets data 0–20 min 50–70 after AS had been stopped. The direct (DC) AC components (DCflux ACflux, respectively), pulse width (PW), foot delay time (FDT) flux signal calculated. DCflux, PW, FDT all significantly increased only AS. Regression analysis between DCflux ACflux revealed that slope was largest (>1) among measurement sites. Our results indicated both microcirculatory perfusion with change being greatest for latter. Parameters calculated from pulsatile waveform, such as PW FDT, could contribute noninvasive evaluations sympathetic neural activities improvement
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