P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia.
Bull Exp Biol Med. 2022 Aug;173(4):409-414. doi: 10.1007/s10517-022-05558-4. Epub 2022 Sep 5.
We studied the effect of optical stimulation with a frequency of 10 Hz on the cognitive task effectiveness (the "n-back" test) and spatial characteristics based on the coefficients of coherence (Coh) of the general, high, and low ranges of the EEG alpha rhythm in healthy subjects (38 men aged 18-26 years). Based on the performance of the test presented in the optical stimulation absence, groups with high (group 1) and low (group 2) results have been identified. It was found that the optical stimulation led to a decrease in the test effectiveness in group 1 subjects and to an increase in group 2 persons. Optical stimulation increased interhemispheric integration of neural ensembles in a number of cortical areas at frequencies of a high subrange of the alpha rhythm. An increase in interhemispheric cooperation was more characteristic of subjects who increased the test activity effectiveness against the optical stimulation background. It is assumed that the growth of interhemispheric integration caused by rhythmically organized 10-Hz optical stimulation is a factor contributing to an increase in the effectiveness of performing cognitive tasks of this kind.
我们研究了 10 Hz 频率的光刺激对认知任务效果（“n-back”测试）的影响，以及健康受试者 EEGα 节律的一般、高、低范围的相干系数（Coh）的空间特征，受试者为 38 名年龄在 18-26 岁的男性。根据无光学刺激下呈现的测试表现，确定了高（第 1 组）和低（第 2 组）结果的组。结果发现，光刺激导致第 1 组受试者的测试效果下降，而第 2 组受试者的测试效果增加。光刺激增加了在α节律高子范围内的一些皮质区域中神经单元的半球间整合。在有光刺激背景下增加测试活动效果的受试者，其半球间合作增加更为明显。可以假设，由有节奏地组织的 10 Hz 光刺激引起的半球间整合的增加是提高执行这种认知任务效果的一个因素。
