|Cabrini et al. ||2006||Bispectral Index evaluation of the sedative effect of acupuncture in healthy volunteers||Evaluation of BIS changes due to bilateral MA at PC6, LR3, HT7, Yintang, ear point Shenmen versus nearby NAP||BIS values did not differ between true and sham acupuncture at any time point during the study period and BIS changes over time did not differ between the two treatments.|
|Hsu et al. ||2011||Variations of brain activities of acupuncture to TE5 of left hand in normal subjects||Evaluation of effects on the EEG during and after MA at TH5 (l) versus nearby NAP||During acupuncture stimulation, the theta energy was increased. During acupuncture, only alpha energy was noted to have statistical difference.|
|Kim et al. ||2008||The effect of acupuncture at PC-6 on the electroencephalogram and electrocardiogram||Evaluation of MA effects on the EEG during PC6 versus nearby NAP||EEG signals increased after acupuncture stimulation. In each frequency band, the average amplitude of EEG power was higher after acupuncture stimulation than after NAP stimulation.|
|Kim et al. ||2009||A characteristic estimation of bio-signals for electro-acupuncture stimulations in human subjects||Evaluation of bilateral EA effects at PC5 versus PC6 versus nearby NAP on the EEG||Their findings showed that during verum acupuncture the power spectrum of the low frequency bands in the EEG increased in all lobes.|
|Litscher ||2004||Effects of acupressure, manual acupuncture and laserneedle acupuncture on EEG bispectral index and spectral edge frequency in healthy volunteers||Evaluation of the effects on BIS during MA versus laser acupuncture versus acupressure at Yintang versus acupressure at NAP (near Yintang)||The study reports a decrease of BIS and spectral edge frequency values for acupressure and laser acupuncture at Yintang and for acupressure at the NAP, but not for manual acupuncture.|
|Streitberger et al. ||2008||Effects of verum acupuncture compared to placebo acupuncture on quantitative EEG and heart rate variability in healthy volunteers||Evaluation of the effects on the quantitative EEG during MA at LI4 (bil) versus Streitberger sham acupuncture at nearby NAP||In linear relation to heart rate variability (HRV) changes, verum acupuncture influenced the power EEG with increase in the alpha1-frequency of the occipital region with a shift of the alpha1/theta ratio to the benefit of alpha1 over all electrodes.|
A negative linear correlation was found between the theta-band of the quantitative EEG and the HRV parameters, and a negative linear correlation was also found between low frequency and alpha1 as well as between high frequency and alpha1.