Petrenko E T
Kosm Biol Aviakosm Med. 1989 Aug-Sep;23(4):23-6.
The effect of light 12 Hz stimulus on the productivity of operator's functions and intercentral integration of neocortical systems was studied in terms of biopotential space-time parameters. EEGs from 8 neocortical areas were recorded in 18 subjects playing an electronic game with a computer (simulated operator's function). A microcomputer Electronika-60 was used for automatic analysis of EEG (spectral-coherent analysis) and operator's efficiency. Light 12 Hz stimulus caused a significant (36%) decrease of operator's productivity (p less than 0.05). In the case of light flickering the density of biopotentials corresponding to the light stimulus frequency increased significantly (30-52%) (p less than 0.05). Coherence of this frequency grew by 17-40%. However, in the 6-8 Hz band the spectral density and coherence of biopotentials of the frontal, motor and parietal areas decreased by 16-21% and 14-23%, respectively (p less than 0.05). Light effects produced disorders in interhemisphere asymmetry. Changes in the spectral parameters of motor areas of the left and right hemispheres and disturbances of interhemisphere interaction were detected. It is assumed that the resistance of the motor control system to light stimulus during operator's activity depends on the resistance of space-time integration of functionally important areas to the synchronizing effect of light interference.
根据生物电位时空参数，研究了12赫兹光刺激对操作者功能效率及新皮质系统中枢间整合的影响。在18名受试者玩电脑电子游戏（模拟操作者功能）时，记录了8个新皮质区域的脑电图。使用电子计算机-60微型计算机自动分析脑电图（频谱相干分析）和操作者的效率。12赫兹光刺激使操作者的效率显著降低（36%）（p<0.05）。在光闪烁情况下，与光刺激频率相对应的生物电位密度显著增加（30%-52%）（p<0.05）。该频率的相干性增加了17%-40%。然而，在6-8赫兹频段，额叶、运动区和顶叶区域生物电位的频谱密度和相干性分别下降了16%-21%和14%-23%（p<0.05）。光效应导致半球间不对称出现紊乱。检测到左右半球运动区频谱参数的变化以及半球间相互作用的紊乱。据推测，在操作者活动期间，运动控制系统对光刺激的抗性取决于功能重要区域的时空整合对光干扰同步效应的抗性。
