Dermo-optical perception of the visible range different wavelengths electromagnetic radiation by the palms skin of visually
Visnyk of V.N. Karazin Kharkiv National University, series "Radio Physics and Electronics"
Background. There is no single point of view which would explain the exact mechanisms of dermo-optical perception and nonspecific stimuli brain processing features at the moment, but to understand this perception peculiarities it is important to study the different skin receptors response to different colors. Objectives. The work aim is to determine the visible range different wavelengths electromagnetic radiation influence on the palms skin different types somatosensory receptors activity and
... ptors activity and nerve fibers involved in the skin innervation. Materials and methods. The experiments involved 12 visually impaired children (at their request and with their parents permission). The various somatosensory receptors condition measurement located on the palms, as well as the skin innervation of visually impaired children who participated in the dermo-optical perception training, was performed using the device "KSD" by recording and computer analysis of the electromagnetic oscillations emitted by the organism. Results. An experimental study of changes in the various somatosensory receptors activity located on the palms, as well as the visually impaired children skin innervation under the visible range different wavelengths electromagnetic radiation action was performed. It was found that under the light action, depending on the specific wavelengths, the studied receptors and nerve fibers are activated or suppressed. An increase in the thermal sensitivity activity (Ruffini's body) under the electromagnetic radiation influence on the palms skin in the wave range from 380-700 nm (in the entire visible light spectral range). The greatest activation was observed in «warm» (red, orange) and green colors. On white, black and «cold» colors (blue, blue) the Ruffini's bodies activation was less than on «warm» colors. Conclusions. The obtained experimental results indicate the palms skin various somatosensory receptors ability to adapt to the some information perception with a non-specific stimulus - the visible range electromagnetic radiation. It was found that the palms skin dermo-optical perception is due not only to temperature sensitivity (provided by thermoreceptors), but also to other types of receptors: baroreceptors (Pacinian corpuscles), tactile receptors (Meissner's corpuscles), mechanoreceptors (Golgi receptors).