Ward T R, Svensgaard D J, Spiegel R J, Puckett E T, Long M D, Kinn J B
Bioelectromagnetics. 1986;7(3):243-58. doi: 10.1002/bem.2250070302.
In an effort to understand microwave heating better, regional brain and core temperatures of rats exposed to microwave radiation (2450 MHz) or elevated air temperatures were measured in two studies. In general, we have found no substantial evidence for temperature differentials, or "hot spots," in the brain of these animals. In the first study, after a 30-min exposure, no temperature differences between brain regions either after microwave or ambient air exposure were found. However, a highly significant correlation between brain and core temperatures was found and this correlation was the same for both microwave and ambient air heating. In the second study, time-temperature profiles were measured in rats exposed to either 30 mW/cm2 or 36.2 degrees C. In this study, the 30-min exposure period was divided into seven intervals and the change in temperature during each period was analyzed. Only the cortex showed significantly different heating rates between the air heating and microwave heating; however, this difference disappeared after the initial 5 min of exposure.
为了更好地理解微波加热，在两项研究中测量了暴露于微波辐射（2450兆赫）或气温升高环境下的大鼠的局部脑温和核心体温。总体而言，我们没有发现这些动物大脑中存在温度差异或“热点”的实质性证据。在第一项研究中，经过30分钟的暴露后，未发现微波暴露组和环境空气暴露组之间脑区温度存在差异。然而，发现脑温和核心体温之间存在高度显著的相关性，并且这种相关性在微波加热和环境空气加热中是相同的。在第二项研究中，测量了暴露于30毫瓦/平方厘米或36.2摄氏度环境下的大鼠的时间-温度曲线。在这项研究中，30分钟的暴露期被分为七个时间段，并分析了每个时间段内的温度变化。只有皮质在空气加热和微波加热之间显示出显著不同的加热速率；然而，这种差异在暴露最初5分钟后消失。
