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Sleep learning secret revealed

03.11.2022

It is well known that in order to consolidate new information received during the day, you need to "sleep" with it. During the night, all knowledge and impressions will subside and be deposited in memory. A similar process is even reflected in folk proverbs and sayings. However, until now, scientists have remained a mystery of what exactly happens in the brain and how to explain this phenomenon.

To unravel this mystery, researchers at the Pennsylvania State University (USA) conducted a series of experiments in which volunteers slept in the laboratory, and scientists recorded changes in their brain activity. As a result, based on these data, a computer model of the activation of neural networks during sleep was built.

Scientists have found that as the brain goes through slow-wave sleep and rapid eye movement (REM) sleep, which happens about five times a night, one region of the brain, the hippocampus, "teaches" another region of the brain, the neocortex, with the information received during wakefulness. knowledge. Through this process, new ephemeral information is transformed into lasting memories.

The hippocampus is responsible for episodic memory, while the neocortex is responsible for speech, thinking, and other functions of higher nervous activity. During slow wave sleep, the hippocampus communicates with the neocortex and transmits new data to it, and during the REM phase, the neocortex fixes the received information in long-term memory.

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Garmin Smart Bike Headlight 06.05.2017

Garmin has unveiled the Varia UT800 Smart 800 lumens smart bike headlight, weighing just 130 grams. The device provides bright continuous light for an hour and a half trip. When connected to the Edge cycling computer, the intensity of the beam can be automatically adjusted depending on changing light conditions and the speed of the cyclist, Garmin told CNews.

The device will make your trip safer in any conditions: day and night, on bike paths in the city and country highways. Varia UT800 Smart illuminates exactly the area of the route and with the intensity that is necessary for visibility, orientation and trouble-free movement in given ambient light conditions. In the case when the cyclist picks up speed, the headlight automatically "raises" the beam of light and thereby increases the field of view, the company noted.

In the daytime, the light of the headlight is visible at a distance of more than 1,6 km. Varia UT800 includes five levels of light intensity - high, medium and low, as well as flashing modes for day and night. At 800 lumens, the Varia UT800 will shine as brightly as possible so that the cyclist has time to spot obstacles at the highest speed. At low speeds, the headlight dims to conserve battery power. At high speed, the Varia UT800 Smart headlight can accompany the trip for 1,5 hours, at low speed, the device guarantees sufficient illumination for 6 hours.

"We're excited to add the Varia UT800 to our line of innovative Varia products that improve cyclist safety," said Dan Bartel, Garmin's vice president of worldwide user sales. With five different light modes, this headlight shines brighter and lasts longer, giving cyclists more confidence."

With the help of a bicycle mount, the device is easily mounted on the handlebars or fixed on the helmet. When connected to the Edge cycling computer, the range of possibilities of the Varia UT800 Smart expands: the user can automatically turn the headlight on and off, adjust the brightness of the light depending on external conditions, the time of sunrise or sunset, the speed of movement, as well as automatically manage the power to activate the mode if necessary. energy saving.

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