A recent US study says frequent sighs and importance for the lungs to take that deep breath.
Often synonymous with despair, boredom or relief, one might think that sigh expresses nothing more than a state of mind. California University researchers at Los Angeles (UCLA), together with those of Stanford, though just discovered this great inspiration actually had a vital mechanism in our respiratory system.
The work, published Feb. 8 in the journal Nature, and explain that the sigh can fill our lungs with a volume of air two times greater than during conventional respiration. Thus, they stretch more and work better. The study also stresses that if we do not longed, our lungs would not allow us to hold a lifetime.
The researchers therefore examined what triggers sighs, knowing that in approximately twelve per hour, or one every five minutes. If we know that it is our brain that we "control" sigh, scientists have however always had trouble identifying the neurons responsible for this action. The research team from UCLA and Stanford was therefore interested in the part of the brain that controls our breathing. "Every neuron functions as a button which causes a different way of breathing. A program button regular breathing, another sigh, and other yawning, sniffing, coughing and maybe even laughter and tears, "says professor of biochemistry at Stanford, Mr. Krakow. The researchers analyzed the genes contained in it by breathing-related cells. They discovered that some cells were releasing substances to communicate with the neurons that control the rate and respiratory rate.
By practicing the experiment on mice and their injecting these substances, they found that the frequency of sighs increased. Conversely, blocking the production of these substances by the brain in rodents hardly sighed.
The study findings appear very promising for the use of these substances as part of treatment for people with respiratory problems, suffering from anxiety or psychological problems related to breathing. Now the question is how emotions provoke sighs ...
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