In this paper, we propose a method for estimating the frequency modulation of EEGs based on Fourier filtering of the initial signal on a narrow frequency band, followed by calculation of the time taken to reach both maximum and minimum peak values of the reconstructed signal (peak-to-peak periods). The resulting sequences were processed using the Fourier transform. EEGs recorded from healthy volunteers during photostimulation were used as the objects of study. Overall, EEG responses with a frequency range of 7 to 9 Hz demonstrated a more pronounced phenomenon of frequency modulation for occipital leads than those with the frequency range of 13 to 15 Hz. There were almost no differences in power spectral indices that modulate EEGs. Two types of EEG frequency modulation were revealed in the studied frequency ranges; the first type is not related to frequencies and is characterized by either a high or low level of exposure, while the second type has a connection between the nature of the modulation and the “carrier” frequency of the signal.

在本文中，我们提出了一种估计 EEG 频率调制的方法，该方法基于在窄频带上对初始信号进行傅立叶滤波，然后计算达到重构信号（峰值）的最大和最小峰值所需的时间。 - 高峰期）。使用傅立叶变换处理所得序列。在光刺激期间从健康志愿者记录的脑电图被用作研究对象。总体而言，与频率范围为 13 至 15 Hz 的 EEG 响应相比，7 至 9 Hz 频率范围内的 EEG 响应表现出更明显的枕骨导联频率调制现象。调制 EEG 的功率谱指数几乎没有差异。在研究的频率范围内揭示了两种类型的 EEG 频率调制；