آرشیو خرداد ماه 1395

You may have heard people describe themselves as strictly "right-brained" or "left-brained," with the left-brainers bragging about their math skills and the right-brainers touting their creativity. That's because the brain is divided down the middle into two hemispheres, with .each half performing a fairly distinct set of operations

Much of what is known about brain function is owed to Roger Sperry, whose experiments examined the way the human brain's hemispheres operate both independently and in concert with each other. The two hemispheres communicate information, such as sensory observations, to each other through the thick corpus callosum that connects them

The brain's right hemisphere controls the muscles on the left side of the body, while the left hemisphere controls the muscles on the right side of the human body. When you wink your right eye, that's the left side of your brain at work. Because of this criss-cross wiring, damage to one side of the brain affects the opposite side of the body

In general, the left hemisphere is dominant in language: processing what you hear and handling most of the duties of speaking. It's also in charge of carrying out logic and exact mathematical computations. When you need to retrieve a fact, your left brain pulls it from your memory

The right hemisphere is mainly in charge of spatial abilities, face recognition and processing music. It performs some math, but only rough estimations and comparisons. The brain's right side also helps us to comprehend visual imagery and make sense of what we see. It plays a role in language, particularly in interpreting context and a person's tone

As for whether a person is right-brained or left-brained or evenright-handed or left-handed the uses and preferences of the brain's two sections are far more complex than just a simple left vs. right equation. For example, some people throw a ball with their right hand but write with their left 

The brain carefully balances and assigns control of certain functions to each side it's all nature's way of ensuring that the brain ultimately splits up tasks to maximize efficiency. Most people are right-hand dominant which is actually controlled by the left side of the brain

"Brain asymmetry is essential for proper brain function," professor Stephen Wilson of University College London told Live Science, a sister site of Life's Little Mysteries. "It allows the two sides of the brain to become specialized, increasing its processing capacity and avoiding situations of conflict where both sides of the brain try to take charge

?what is the real difference between heaven and hell


A man spoke with the lord about heaven and hell and asking about the differences between heaven and hell. The Lord said
to the man, " Come, I will show you hell ."They entered a room
where a group of people sat around a huge pot of stew. Everyone
was famished, desperate and starving. Each held a spoon that reached the
pot, but each spoon had a handle so much longer than their own arm
that it could not be used to get the stew into their own mouths.
the suffering was terrible.
"Come, now I will show you heaven, "the lord said after a while. They entered another room, identical to the first- the pot of stew, the group of people,
the same long- handled spoons. But there everyone was happy and
well- nourished.
"I don't understand, "said the man. "Why are they happy here when
?"they were miserable in the other room and everything was the same
The lord smiled. "Ah, it is simple, "he said. "Here they have learned to feed each other


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A gynecologist had a burning desire to change careers and become a mechanic. So she found out from her local tech college what was involved, signed up for evening classes and attended diligently, learning all she could. When time for the practical exam approached, she prepared carefully for weeks, and completed the exam with tremendous skill. When the results came back, she was surprised to find that she had obtained a mark of 150%. Fearing an error, she called the instructor, saying "I don't want to appear ungrateful for such an outstanding result, but I wondered if there had been an error which needed adjusting." The instructor said, "During the exam, you took the engine apart perfectly, which was worth 50% of the total mark. You put the engine back together again perfectly, which is also worth 50% of the mark. I gave you an extra 50% because you did all of it THROUGH the exhaust..."