Showing posts with label brain. Show all posts
Showing posts with label brain. Show all posts

Sunday, June 22, 2014

American scientists claim that eating foods with a high glycemic index increases the activity areas of the brain responsible for feelings of pleasure, the formation of traction and addiction.

American scientists claim that eating foods with a high glycemic index leads to the fact that increases the activity areas of the brain responsible for feelings of pleasure, addiction and the formation of thrust. Stimulation of similar brain areas noted in the formation of various types of addictions such as drug, tobacco, alcohol or another.

Mechanism of the effect of foods rich in carbohydrates (white bread, pasta, potatoes) is that carbohydrates are the fastest split body that causes a sharp increase in blood glucose, and then a sharp drop in its level.

This occurs within four hours after a meal - a time determining eating behavior during the next meal. Lack of sharp glucose activates the appropriate parts of the brain depending on the formation, which was confirmed by testing the activity of the brain using MRI.

These results suggest that the restriction in the diet foods with high glycemic index does not allow people to buy a full dependence on them, and, accordingly, do not overeat.

Saturday, February 01, 2014

Researchers at Harvard Medical School studied the effect of hot chocolate on the human brain. Researchers concluded that cocoa contained in nutrients necessary for a person as protect his brain damaged areas of education.

In particular, experts have found a link between what the consumption of hot chocolate and memory, thinking, and neurovascular coupling in the brain - a process in which blood flow to the brain tissue changes with increased activity of certain brain regions. Neuroscientists explain that Neurovascular communication plays an important role in diseases involving degeneration of the brain, for example, in the development of Alzheimer's disease .

In an experiment to study the properties of cocoa 60 elderly people without dementia, at an average age of 73 years, every day during the month of drinking a cup of hot chocolate. In this study participants did not use any more products containing chocolate.

When a month of daily use small portions of hot cocoa volunteers underwent tests on memory and thinking, experts have identified improvements in the state of their brain. If at the beginning of the study 18 of the 60 participants had weakened neurovascular relationship by the end of its research performance has improved by 8.3%.

According to experts, due to the weakened neurovascular characteristic insufficient blood flow to certain areas of the brain. The result of this defective blood flow may be the emergence in the white matter of the brain damaged areas tiny - it shows MRI studies. Based on the experimental results, the use of hot chocolate protects against unpleasant process.

More advanced participants and demonstrated ability for testing short-term memory. The same task they perform, on average, at the beginning of the experiment - for 167 seconds, after - just for 116 seconds.

Thus, the researchers were convinced that eating chocolate brings clear benefits to the human brain. However, experts note that this delicacy overeat still not worth it - just to indulge yourself sometimes dessert.

Friday, September 20, 2013

In the structural connections of the brain and do not depend on the source of the original injury.

This is the conclusion drawn by researchers from the Medical Institute at Northwestern University.

In a study conducted by Professor Ivan Apkaryana physiology, was attended by 46 patients with chronic pain in the lower back. The participants underwent a brain scan, and then the experts during the year following the change in pain from them. Approximately half of the participants in this time the pain was gone, regardless of whether they took any medication.

The study confirmed that certain brain structures associated with chronic pain. This will change the approach to the diagnosis of pain and to develop more effective treatment.

Sunday, September 15, 2013

Austrian scientists for the first time, the world has grown from stem cells in the human brain is small. The results of the research are published in the journal Nature.

To grow a brain, biologists took skin cells healthy person and reprogrammed them into stem cells (iPSC, induced pluripotent stem cells), which can develop into any type of tissue. The thus obtained stem cells are first grown in a special gel substrate, the structure resembling the connective tissue of the human body, and then placed in a tray.

After a while of stem cells grown some structures resembling embryonic brain during the ninth week of development. The diameter of each reached 3-4 mm.

Under the microscope, the scientists were able to examine the interacting region of the brain. In the mini-brain was detected even bark. "The overall structure of the grown samples differed," - said Noblich. This is due to the fact that in normal fetal brain maturation run molecule growth factors produced elsewhere in the body. Furthermore, due to the small diameter body tissues blood vessels absent.

Achieving Austrian biologists will allow scientists to find out the reasons of diseases characterized by impaired development of the brain, such as microcephaly. In this disease suffer skull size (and hence the brain) is less than normal for a healthy development of other parts of the body. Microcephaly is always accompanied by mental deficiency. To study the occurrence of the disease in rodents is not feasible due to species differences in the structure of the brain.

Earlier, another group of scientists has managed to grow from stem cells of the human eye, mouse heart and even teeth.

Monday, July 15, 2013

U.S. researchers have developed a tool that analyzes a child crying for the presence of health problems and development.

Scientists from Brown University in collaboration with Children's Hospital took into account the changes in the child's crying, indistinguishable to the ear may indicate a change in the health of the baby. Crying Analyzer captures the difference acoustics crying.

According to Associate Professor Stephen Shenkopfa, many neurological conditions affect the nature of the baby's crying. For example, a birth injury , premature birth, brain injury as a result of complications of pregnancy. The new device will be a non-invasive method for diagnosing disorders in the neurobiological and neurobehavioral system of newborns.