Over the past 100 years, scientists have realized that different parts of the brain are used to their unique objectives. Only recently, it became clear - the organization is not static.
Analyzing the brains of people in the state of rest or when performing complex tasks, researchers at Stanford University found that the integration between the areas of the brain varies. When the brain is more integrated, people are better at solving complex problems. Project results are published in "Neuron".
The connection between the areas of the brain at rest and at work
The three parts of the research, researchers used data from a study open "Connect man," to learn how to separate areas of the brain coordinate activity with the passage of time, when people are in a state of rest or solve complex mental tasks. They then tested the neurobiological mechanism to explain the results.
In order to study the state of rest the researchers used functional magnetic resonance imaging (MRI) - the data that shows in real time what areas of the brain are active when people do not perform a specific task. The analysis estimates the amount of blood flow in brain regions, and then uses the mathematics of graph theory to draw conclusions about the organization of the whole of the brain.
The researchers found that the brains of participants in a more integrated while working on challenging than during a relaxing holiday. Scientists have shown that the brain is dynamic in nature, and that different parts of the brain are closely connected in people who carried out the test quickly and with maximum precision.
As a final step in the study, researchers measured pupil size, which is an indirect measure of activity in the small area of the brainstem called locus coeruleus, which is believed to increases or muffles signals throughout the brain. Up to a point increase in pupil size indicates a strengthening of strong signals and muting of weak signals throughout the brain.
Meaning studies movable curiosity
The study will help to better understand the cognitive disorders such as Alzheimer's disease or Parkinson's disease. One of the scientists said that this project was conducted more out of curiosity and desire to explore the brain: "I think we were lucky in the fact that research has borne fruit. We are in a stage where we can ask new questions and to make progress in understanding the functioning of the body. "
Based on materials medicalxpress.com