Biological Effects of High Stationary Magnetic Fields

高稳态磁场的生物效应

• 批准号: 07458129
• 负责人: IKEDA Tetsuo
• 金额: $ 4.54万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07458129/
• 关键词: direct-current magnetic field; accumulation effect; magnetic field; amount of exposure; biological magnetic field effect; wave form of heartbeat; heartbeat; mub fish; 磁場影響蓄積; 生体影響

This research is about biological effects under the stationary magnetic fields. We examined the biological effects for experiments. We limited the subject to the effects of the heart function so judged the effects of heartbeat and the wave form of the heaitbeat. We have heard that the effects under the magnetic fields are an instant so far and they have neither been accumulated nor memorized. By preliminary experiments the accumulation of effects have possibility so repeated the experiments about accumulation. We put the mud fishes with the bottom up in test tubes and expose stationary magnetic fields from the side under supplying air. We made clear that usual heart beat is 25-26/minute but it decreased to 20-21/minute after exposure. This value constants no matter how strong magnetic fields and how long time for exprosure. The duration needed for the heartbeat to decrease was proportion to the product of the strength of the magnetic field and the exposed time. The strength of the magnetic field is 1-1.3 (Tesla) and 5.7T.Asaresult we found the value of the threshold level is about 1-5th (Tesla・hour).Besides we found electrocardiogram eliminated noises by averaging and investigated variation of it by exposure. As to amplitude of electrocardiogram after exposure the amplitude decreased, on the other side the width increased. But area of wave form is almost steady and sum of active heart muscles does't change.According to these results we suggest if period laying under the magnetic field is long and heartbeat and blood pressure are decrease, that has important effects upon biological support. This is entirely new view point. We have considered that effects of magnetic fields were insatant up to now, but according to these results we willbe able to make a new field.

本研究是关于恒定磁场下的生物效应。我们研究了实验的生物效应。我们将受试者限定为心脏功能的影响，从而判断心跳的影响和心跳的波形。我们听说，磁场下的效果到目前为止是一瞬间，它们既没有积累也没有记忆。通过初步的实验证明了累积效应的可能性，因此重复了累积效应的实验。我们将泥鳅底部朝上放入试管中，并在供气下从侧面暴露固定磁场。我们明确指出，通常的心跳是25-26/分钟，但暴露后下降到20-21/分钟。无论磁场有多强，暴露时间有多长，这个值都是不变的。心跳减弱所需的时间与磁场强度和暴露时间的乘积成正比。磁场强度为1-1.3特斯拉，5.7T，测得阈电平约为1- 5特斯拉·小时，心电图除噪声外，还观察了心电图随暴露的变化。暴露后心电图振幅减小，宽度增大。但波形面积基本稳定，活动心肌总数无变化，提示长期放置磁场下，心率、血压下降，对生物支持有重要影响。这是一个全新的观点。到目前为止，我们一直认为磁场的作用是不稳定的，但根据这些结果，我们将能够建立一个新的场。