Stress changes the brain. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Stress changes the brain

20.05.2023

Working with mice, the researchers found that a single stressful event triggered rapid and lasting changes in brain cells that cleared the brain of debris.

Research by Si-Kwong Jun Liu, MD, professor of cell biology and anatomy at the Center for Health Sciences at Louisiana State University New Orleans, has shown how stress changes brain structure.

It is noted that based on the results, a potential therapeutic target for prevention and treatment can be identified.

Working with mice, Liu and her research team found that a single stressful event triggered rapid and lasting changes in astrocytes, the cells in the brain that clear away debris. The stressful episode caused the tips of astrocytes to move away from synapses, through which information is transmitted from one cell to another.

The team also uncovered a mechanism leading to communication disruption. They found that during a stressful event, the hormone norepinephrine inhibits the molecular pathway that normally produces the GluA1 protein, without which nerve cells and astrocytes cannot communicate with each other.

<< Back: Complimentary Telly TV with additional advertising screen 21.05.2023

>> Forward: Purification of water from uranium using magnetic bacteria 20.05.2023

Latest news of science and technology, new electronics:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Wireless speaker Samsung Music Frame HW-LS60D 06.05.2024

In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Random news from the Archive

TOSHIBA SATELLITE laptops can now burn DVD-R/RW 09.03.2003

Toshiba has introduced new laptop models from the Satellite series, positioned as a replacement for desktop PCs. Relatively inexpensive machines are equipped with DVD burners.

New items are marked 2455S305 and 1955-S805 and cost respectively 2299 and 2099 US dollars. For this money, the user gets a system on a Pentium 4 processor with 512 MB of memory and a 60-gigabyte hard drive. Other components the same for both machines; NVIDIA GeForce4 420 Go video system with 32 MB video memory, V.92 modem, 10/100 Mbps network adapter from Intel, three USB 2.0 ports and one i Link (IEEE 1394). Notebooks are equipped with DVDR/RW drives. The package also includes Windows XP Home.

The differences between the models lie in the larger diagonal of the screen: the Satellite 1955-S805 has 16 inches with a resolution of SXGA (1365x1024) versus 15 inches for the Satellite 2455-S305 with a resolution of 1024x768. In addition, the processor frequency of the first is 2,53 GHz, the second - 2,4 .XNUMX GHz Both models belong to the category of inexpensive notebooks.

Previously, DVD burning in Toshiba notebooks was only available on expensive systems such as the Satellite 5205-S703. released in October 2002, the company's first mobile computer with a built-in DVD-R/RW drive.

Toshiba's pricing looks better than Apple's other PowerBook offerings, with a 15-inch screen and DVD burner for the same RAM costs $2799 (price from the company's website), and a Sony laptop that also burns DVD sells for $2500 .

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews