抄録
The authors have had problems at field in using conventoinal multi-channel universal telemeters hitherto used. Therefore, with a view to achieve portability of the apparatus and simplification of handling and data treatment concerning heart-beat of biological information, the authors made improvements which made possible the recording of heart-beat number on paper in numerals. The results are shown as follows : 1. As to the portability of the appratus, the total weight has been reduced to 14kg compared with 36kg before. 2. The measurements taken are highly reliable and decipherment of even minute and precise changes have been made possible, as the measurements are indicated in numerals. 3. As to data treatment, a various approaches in statistical treatment have been made possible, as the measurements are indicated in numerals. 4. The noise produced by the apparatus while measuring heart beat number is large either at recorder or printer, but as the apparatus is a wireless telemeter, and because the printer is small size, only this could be isolated at another place, so that the problem of the noise was solved. As above-mentioned, as the initial idea could be completed to some extent, the authors wish to continue to apply this apparatus from now on to various objects such as patients and operators during dental therapy, mental and somatic change while making exercise and so on.
