Posts Tagged ‘Tehran Doctors Directory News’

An inability to deal with more than two things at a time may be “hard-wired” into our brain, research suggests.

When we try to do two things at once, each half of the brain focuses on a separate task, French scientists say.

This division of labour could explain why we find it so difficult to multi-task, they report in the journal Science.

It might also explain why people are prone to make irrational decisions when choosing from a long list of items.

Lead author Dr Etienne Koechlin told the BBC: “You can cook and at the same time talk on the phone but you cannot really do a third task such as trying to read a newspaper.

“If you have three or more tasks you lose track of one task.”

The French team used an imaging technique to monitor brain activity in 32 volunteers asked to perform a letter-matching test.

The scans looked at the frontal cortex, the part of the human brain associated with impulse control.

When the volunteers completed one task at a time, one side of a certain area of the frontal lobes lit up.

But, when they completed two tasks at the same time, the lobes divided the tasks between them.

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Stop wasting that enormous membership fee at your gym and instead improve intimacy with your partner to be as healthy as ever!

Dr Prakash Kothari, advisor, World Association for Sexual Health, believes that one round of sex in bed is equal to running three rounds of the Hanging Gardens at Malabar Hill. He says, “Sex can burn a lot of calories provided it’s done in a proper way for both the partner. Unless there is equality and mutuality, sex cannot be a healthy workout.”

In a single round of sex, a couple burns approximately 350-500 calories, suggests fitness expert Leena Mogre. She says, “Sex is great from physical as well as psychological perspectives. It cuts down your stress completely. Plus it lowers your blood pressure and reduces the risk of heart attacks.”

Living exclusively oxygen-free was thought to be a lifestyle open only to viruses and single-celled microorganisms. A group of Italian and Danish researchers has now found three species of multicellular animal, or metazoan, that apparently spend their entire lives in oxygen-starved waters in a basin at the bottom of the Mediterranean Sea.

The discovery “opens a whole new realm to metazoans that we thought was off limits”, says Lisa Levin, a biological oceanographer at Scripps Institution of Oceanography in La Jolla, California.

Roberto Danovaro from the Polytechnic University of Marche in Ancona, Italy, and his colleagues pulled up the animals during three research cruises off the south coast of Greece. The species, which have not yet been named, belong to a phylum of tiny bottom-dwellers called Loricifera. Measuring less than 1 millimetre long, they live at a depth of more than 3,000 metres in the anoxic sediments of the Atalante basin, a place so little explored that Danovaro likens his team’s sampling to “going to the Moon to collect rocks”.

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