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Introduction and purpose: The impact of electronic devices on our daily lives is becoming increasingly significant. The contemporary generation of young people is growing up in a world where smartphones, tablets, computers, and other electronic devices are widely available and utilized. Scientists are contemplating the challenges posed by excessive exploitation of electronics on the health of young individuals. The aim of the article is to present the harmful effects of using electronic devices before sleep in young people, considering medical aspects such as sleep disorders and their influence on overall psychophysical health. Summary: Electronic devices negatively affect the sleep of young people by reducing sleep time and delaying the sleep onset phase. The main problem is the use of electronic devices without time limits. In the era of technology, it is significantly important to raise awareness among young people about the importance of sleep hygiene and how blue light emitted by electronic devices affects its quality.

Introduction: Today the use of digital devices is widespread in society. It has been observed increased frequency of sleep disorders occurring in the population in every age group. Scientists, concerned about the scale of the problem, have become interested in the effects of blue light emitted by the displays of digital devices, on sleep. Purpose of the work: The aim of the study is to answer the question whether a blue light emitted by digital devices affects sleep and to indicate the potential prevention of sleep disorders resulting from the use of digital devices. Materials and methods: A literature review was performed in the PubMed database using the keywords: blue light exposition; sleep quality; insomnia; light emitting diode; electronic device. Summary: Blue light emitted by various digital devices affects sleep by shortening and deteriorating the quality of sleep, falling asleep later, exacerbating feelings of sleep deprivation and increasing feelings of fatigue. Scientists have identified a couple of possible mechanisms to explain this phenomenon. There is a method that allows to reduce the negative effects of using various electronic equipment, without having to limit the length or set a rigid time frame for their use. Due to the increasing problem of sleep disorders and new habits among the society, scientists point out the need to monitor the discovered impact of blue light on sleep.

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Purpose/Thesis: The wide spread of information and communication technologies, which is reflected in the growing availability of texts in digital forms and devices enabling their reception (laptops, tablets, smartphones), encourages us to do research on reading behaviour in the context of the growing popularity of e-texts and the devices that display them. The aim of the article is to present the results of perception and reception tests of the text in printed and electronic forms. The authors attempt to answer the research question as to whether the text medium affects the perception of the text. Approach/Methods: An experiment was conducted among students whose task was to read the text and answer the questions related to its content. The students were divided into four groups of people reading the text from: from an A4 sheet, a 14-inch laptop, a 6-inch e-book reader and a 5-inch mobile phone. Practical implications: The results of the research can be used in the teaching methods of academic teachers. Originality/Value: The innovativeness of the approach in the research presented in the article is the application of an experiment to collect data which was then subjected to comparative analysis and interpretation. In Polish-language literature on text reception such an approach rarely occurs. [ABSTRACT FROM AUTHOR]