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Objectives To determine whether any difference exists in responses to indirect moxibustion (IM) relative to thermal stimulation duration. Methods In experiment 1, 9 subjects attended two experimental sessions consisting of single stimulation with IM or triple stimulation with IM, using a crossover design. A K-type thermocouple temperature probe was fi xed on the skin surface at the GV14 acupuncture point. IM stimulation was administered to the top of the probe in order to measure the temperature curve. In addition, each subject evaluated his or her subjective feeling of heat on a visual analogue scale after each stimulation. Experiment 2 was conducted on 42 participants, divided into three groups according to the envelope allocation method: single stimulation with IM (n=20), triple stimulation with IM (n=11) and a control group (n=11). A thermograph was used to obtain the skin temperature on the posterior trunk of the participant. To analyse skin temperature, four arbitrary frames (the scapular, interscapular, lumbar and vertebral regions) were made on the posterior trunk. Result In experiment 1, no signifi cant difference in maximum temperature was found in IM and subjective feeling of heat intensity between single and triple stimulation with IM. In experiment 2, increases in skin temperature occurred on the posterior trunk, but no differences in skin temperature occurred between the groups receiving single and triple stimulation with IM. Conclusion No difference exists in the skin temperature response to moxibustion between the single and triple stimulation with IM.

Objectives To investigate whether acupuncture stimulation affects autonomic nerve function by measuring pupil diameters with electronic pupillography. Methods Two studies were conducted (Experiment 1 and 2) in the Tsukuba University of Technology, Tsukuba, Japan. Experiment 1 examined the responses before, during and after acupuncture. Experiment 2 compared acupuncture and a no acupuncture control in a two period, repeated measurement crossover design. Twelve healthy male university students were recruited for Experiment 1 and nine healthy male university students for Experiment 2. The intervention was superficial acupuncture at the acupuncture point TE5. Following the insertion, gentle repetitive tapping stimulation was applied during the subject's exhalation phase in a sitting position for 90 seconds. The main outcome measures in Experiment 1 were pupil diameter, heart rate, pulse wave and blood pressure. In both experiments, pupil diameter was measured for three minutes before acupuncture stimulation, during stimulation and for three minutes after stimulation. Results In Experiment 1, a decrease in pupil diameter was observed after acupuncture stimulation (P=0.018) and a decrease in heart rate was observed during the stimulation (P=0.049). Moreover, a significant decrease of pulse wave amplitude was observed during and after acupuncture stimulation. In Experiment 2, a decrease in pupil diameter occurred after acupuncture stimulation (P=0.007), whereas no change occurred under the no acupuncture control. Conclusions It is thought that the pupillary constriction observed after gentle, superficial acupuncture stimulation may be attributed to an increase of parasympathetic nerve function. Further study is necessary in order to further clarify the duration of the observed response and to elucidate the mechanisms behind it.