How do feedback signals gadgets allowing to see lucid dreaming work? Why neurologists and neurobiologists don`t like such practice? Why lucid dreaming is danger for the health and nervous system of human? Evgeniy Verbitskiy, doctor of biological science, professor, head of SSC RAS laboratory, head of Rostov oblast department of Russian somnology society tells why lucid dreaming can be a reason of distorting of dream and wakefulness. And why it can be cause of neuroticism.