To investigate effect on the intensity of pressure phosphenes (PP) of various methods of heating hands, as well as manual influence on cervical spine. This study included subjective assessments of the PP intensity in 10 healthy men, and chronometry of bioelectrical activity of brain and heart using electroencephalography (EEG) and electrocardiography (ECG). EEG and ECG frequency spectra respond synchronously to pressure, heat and light. The time of excitation of potential oscillations in the visual area of the cortex of both hemispheres is consistent with the delay in the onset of PP flaring. The effect of PP stimulation is enhanced when the hands and body are heated in a humid environment and at temperatures above 42 °C. Stimulation of PP by heating indicates the convergence of impulses from neurons of the lateral geniculate body (LGB) and nuclei of the thalamus, which are responsible for thermoreceptors in the skin of the palms and fingers. The thermal stimulation effect of PP is enhanced at temperatures above 42 °C due to the fact that thermoreceptors work as pain receptors. The mechanism of PP generation is dominated by the processes of redistribution and recombination of charges in the layers of the retina and LGB.

中文翻译：

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压力光幻视的热刺激

研究各种加热手部方法对压力光幻视 (PP) 强度的影响，以及手动对颈椎的影响。该研究包括对 10 名健康男性的 PP 强度的主观评估，以及使用脑电图 (EEG) 和心电图 (ECG) 对大脑和心脏的生物电活动进行计时。EEG 和 ECG 频谱同步响应压力、热量和光。两半球皮层视觉区域潜在振荡的激发时间与 PP 爆发的延迟时间一致。当手和身体在潮湿环境和 42°C 以上的温度下加热时，PP 刺激的效果会增强。通过加热刺激 PP 表明来自外侧膝状体 (LGB) 神经元和丘脑核的冲动会聚，丘脑负责手掌和手指皮肤中的温度感受器。由于温度感受器充当疼痛感受器，因此 PP 的热刺激效果在 42°C 以上的温度下会增强。PP 产生的机制主要是由视网膜和 LGB 层中电荷的重新分配和重组过程决定的。