From the Somatics LLC, Venice, FL.
FBI Medizintechnik GmbH, Munich, Germany.
J ECT. 2023 Sep 1;39(3):158-160. doi: 10.1097/YCT.0000000000000913. Epub 2023 Mar 30.
Brain voltage and temperature during electroconvulsive therapy (ECT) are not widely understood but are commonly mischaracterized as resembling a blast.
To better understand brain voltage and temperature during ECT, basic mathematical structural models were constructed and calculations were made. In addition, thermographic images were recorded before and after ECT stimuli were applied to a pork shoulder.
A basic structural voltage model indicates that the voltage drop across single brain neurons is about 6 mV, with a gradient of 0.6 V/cm. This is an order of magnitude smaller than the action potential. Basic structural temperature models indicate that 100 joules raises skin temperature underneath ECT electrodes no more than 1°C, and within the brain by much less. The average temperature increase at each electrode was 0.70 to 0.94°C.
Voltage gradients and temperatures in the brain during the ECT stimulus are well within the range of ordinary physiological functioning. These results are consistent with previous reports that only a small fraction of the electrical stimulus enters the brain.
电痉挛疗法（ECT）过程中的脑电压和温度尚未被广泛理解，但通常被错误地描述为类似于爆炸。
为了更好地理解 ECT 过程中的脑电压和温度，构建了基本的数学结构模型并进行了计算。此外，还在对猪肩施加 ECT 刺激之前和之后记录了热成像图像。
基本的结构电压模型表明，单个脑神经元的电压降约为 6 mV，梯度为 0.6 V/cm。这是一个数量级小于动作电位。基本的结构温度模型表明，100 焦耳只会使 ECT 电极下方的皮肤温度升高不超过 1°C，而在大脑中的升高幅度则小得多。每个电极的平均温度升高为 0.70 至 0.94°C。
ECT 刺激过程中大脑中的电压梯度和温度都在正常生理功能范围内。这些结果与之前的报告一致，即只有一小部分电刺激进入大脑。
