Introduction
Using a low frequency current radiation together with acupuncture, we observed the effect of acupuncture.
Method
To the same patients, we administered it ante, in and post acupuncture for the purpose of detecting and comparing their pleasant sensation among these three methods.
Effect
Many patients felt it better ante and post acupuncture. It was better ante acupuncture to those patients receiving acupuncture for the first time. The experienced, on the contrary, acknowledged that they felt it better post acupuncture.

In order to investigate the meridian phenomenon elicited by the stimulation on auricular acupuncture point, a patient, 58-year old, in whom marked meridian phenomena are observed on the body was selected as a subject.
The stimuli were ginen by means of a low frequency electrical stick method on the 210 auricular-points of the left ear.
The echo sensation to the remote district from the auriculo-points stimulated was observed in about 30% of the total points.
In 4.3%, the site to which echo sensation reached corresponded to the response organ that is expresed in the name of point. A point named “anesthetic point for tooth extraction” was one of the representatives.
The comfortable feeling over head, eyes, and whole body was also observed when stimulation was given to these points.

We investigated changes of the amperage on the dorsalis by the hand acupuncture under the condition of DC 12 volt, 200uA when both electrodes are connected.
(Method) We leaved a stainless steel needle, 25mm lenght and 0.26mm in diameter, on the first lumbar and thigh region point of 16 healthy adults for 10min. 2×2cm aluminum foil coated with keratin cream was used as a elcectrode for the measurement. We measured in pre-practice, post-practice, 10min, 20min, and 30min. The measurement velues in every time were examined by means principal component analysis.
(Results) Acupuncture stimulation on the first lumbar and thigh region point showed the tendency of operation upon the symmetric L4resion.

The authors conducted neurometory of 78 so-called healthy adults throughout the year. Electrical skin resistance (amperage) was measured at the representative measurement points of the ryodoraku. In order to clarify how this resistance changes with months and which ryodoraku is related to the comparison of month groups, the results were analized using discriminatory analysis which is one technique of multivariate data analysis. The primary discriminant function explained the fluctuation of 63.7%, and is related to the ratio of H4 and H6 to F4. The secondary discriminant function explained the fluctuation of 20.2%, and is related to the ratioI of F2 and F4 to H2. In the second-dimensional distribution, the cold season group (April, November, December, January) was against the warmIseason group (June, July, September), and intermediate season group (May, October). However, April wasjrather specific, that is, apart from the other cold seasons. Further observations must be done with regard to seasonal fluctuation.

Authors evaluated which factor among age, sex and season influences each Ryodoraku, and to what extent, using socalled healthy children.
METHOD
Ryodorakumeasurement was conducted on the same subjects in two different seasons. Comparison was done between groups divided according to their sex andage. The measured value of skin electro-resistance at the Ryodoraku representative measuring points and excitation-inhibition frequency were analyzed using single- and multi-variate data analysis.
RESULT
1) Each group showed slightly different Ryodoraku characteristics.
2) The differences among each group were greatest between the two seasons and rather big between years, however, small between male and female.
3) These tendencies werejobserved in both analyses using the measured values and using frequency.

The direction of echo sensation of each acupoint was examined on the patients who showed obvious meridian phenomenon.
The heart meridian and large intestine meridian were chosen. Echo sensation propagating both directions, i. e. afferently and efferently, was seen most often, then afferently only and efferent only followed.
The direction of echo sensation did not neccesarilycoincide with that of meridian stream.

The authors carried out neurometry and CMI investigation on 512 subjects in June and July '87. The subjects were devided into four groups according to the CMI criteria by Fukamachi: CMI. I Diagnosed to be normal, II Provisionally to be normal, III Provisionally diagnosed to be neurotic, IV Diagnosed to be neurotic. Comparison was done not only among these groups, but also among age groups and between male and female.
Although there were no great differences among the group I, II and III, each current through F2, F4, F5 and F6 significantly decreased from the group I to IV (p<0.01). A similar tendency was seen in F2 and F6 of the male subjects in each age group, but no tendency in the female subjects.