How does excessive alcohol consumption affect brain cells? Detailed answer

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How does excessive alcohol consumption affect brain cells? Detailed answer

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How does excessive alcohol consumption affect brain cells?

It is widely believed that alcohol kills brain cells. However, a study of deceased alcoholics and teetotalers showed that the number of neurons preserved in their brains was about the same. However, drinkers showed a decrease in the density of white matter in the old cortex, which consists of processes of neurons. This may explain the memory problems often encountered in alcoholics, since the hippocampus responsible for memory is located in the old cortex. These destructions are not irreversible - if a person stops drinking, the density of white matter may well recover.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

What cloned animals have scientists managed to introduce glow genes that can be turned on and off?

South Korean geneticists have experimentally proved the possibility of controlled "reprogramming" of complex organisms. They developed a line of cloned dogs that glow when exposed to ultraviolet light if a special substance is present in their bodies. The eGFP gene, responsible for the synthesis of an improved green fluorescent protein, was inserted into the dog's DNA, and it only worked if a drug that included it was added to the animal's food. This ability was passed from the female to some of her puppies already without any intervention of geneticists. These studies have great promise for combating human diseases such as Alzheimer's or Parkinson's, because many of them are also inherent in dogs, and the glow gene can be replaced by any other gene.

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Random news from the Archive

Liars get warm noses 10.12.2012

When a person lies, he experiences the "Pinocchio effect" - the temperature of his nose, as well as the muscles in the inner corner of his eyes, rises. In addition, our facial temperature rises if we think hard or experience anxiety. These are just some of the findings from a groundbreaking study carried out at the Department of Experimental Psychology at the University of Granada, which is looking for new applications for thermography.

Thermography is a technique based on measurements of body temperature. It is used in many areas - in industry, medicine, etc. Thermographic cameras have a wide range of applications. With their help, for example, respiratory diseases in cattle or rabies in raccoons are determined. Thermography is used to detect casting defects in metallurgical plants. It was developed during the Second World War to detect the enemy using night vision devices.

The University of Granada, and in particular the scientists Emilio Gomez Milan and Elvira Salazar Lopez, are pioneers in the application of thermography in the field of psychology. The results they have recently obtained are innovative in nature, and simply curious. For example, thermography can detect sexual arousal in men and women. Another curious fact is that performing complex tasks, participating in interrogation and lying cause a change in facial temperature.

The temperature around the nose and at the corners of the eyes is regulated by a brain element called the insula. And it is activated only when we experience real feelings (the so-called "qualias"). The more active, real emotions, the lower the temperature, and the lie raises the temperature.

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