Boon if brain to reckon with the fact that thanks God every second, the brain is not what we perceive in our imagination.
Facts about the brain
1-brain does not feel pain, although the presence of pain sensation centers within it,, where there is no neurological receptors to feel pain to the brain.
2. There are a hundred thousand miles of blood vessels in the brain hundred billion neurons constitute the brain. And all this in a spongy mass size Achammama. The brain uses about 17% of the body's energy and 20% oxygen, while the brain contains only 2% of body size. Brain produces between 10-23 watts and you awake and is workers enough to ignite the bulb is 75% water. The brain has a hundred trillion (100000000000000) nervous clash that connects neurons to each point and is the workers enough to save the 1000 terabytes of information.
3. The difference between the right and the left lobe of the brain
4-brains of men larger by 10% in spite of the fact that women's brains are smaller than the size of the man, Veldihn a greater number of neurons and links that operate more efficiently than men, and the difference in size is the difference between the laptop and the primitive computer.
5-information transmitted via the nerve cells in the brain at different speeds ranging from 0.5 m / s and 120 m / s (about 268 miles / hour).
6-The total number of electrical impulses generated by the human brain only one greater than the number of pulses output from the phones all over the world combined.
7-memories that are retrieved from inhaling certain smell it a stronger link with the human mind is a powerful evocation of other memories.
8-believed that the number of ideas that wander inside the human brain per day is 70000 idea.
How memory works? Think of a place or someone you know ..
Picture you see in your mind now arisen as a result of electrical and chemical signals released by neurons and if I learned that the brain contains 100 billion of these neurons connecting them trillion link in every one cm 3 launches 10 million pulses per second to know that your memory is a chemical complex circuit factory exists in a member talents 1.5 kg almost no more. And moves the value of the pulses or signals from one cell to another chemically by the so-called nerve Palmrslat produced by the cell Vtmr through the clamp that connects between each cell and the other does not touching spoke out electrically another trend, and so the signal from one cell to another move in this way until it reaches the brain, for example, to your toes in less than a fraction of a second.
The memory does not function as one, but there are three distinct types of memory:
1. sensuality.
2. The short-term.
3. The long-term.
1. sensory memory:
Allow you to remember the taste of the apple or the color of milk ... It's candidacy information reaching them through the senses, and there is a sensory memory for every sense of the five senses, so-called memory iconic specializes alarm Basri, Alsdoah memory (relative to the Echo) specializes in alarm audio, memory Alhaptih specializes in touch. The transmitted signals from the sensory memory to the short-term and final nominate the information provided to it by memory, and remains important to them for this time.
2. Short-term memory:
Is similar to the draft to write and call information temporarily until the completion of the preparation and processing. If for example you want to understand a complex sentence of two syllables or verse, you have to keep in your mind until the end of the first part of the second reading. And short-term memory with a weak absorptive capacity and lasts a lot, and are scanned and registered with them constantly. And organize information can increase the absorptive capacity, and therefore the division of the large phone number into sections makes it easier to remember, and that the information overlap reduces short-term memory retention capacity, including the information, so we are trying to get the job done quickly before the memory fade.
3. Long-term memory:
Help you to call the old information and endured meanings at the same time, it's not memory just to conservation and memorization, but they classify and organize information, and this is the reason that learning in an orderly manner and by linking information helps entrenched facts and persistence in memory. There are two types of memory:
A- memory contextual sequential represent events and experiences in sequential memory image, and because of this memory can real events that occurred in certain of our time configuration.
B- semantic organization: is a logical salary of facts, concepts and skills that we have acquired in our record memory. The information in them is derived from those in contextual memory in the sense that we can gain some new facts or concepts from experiences gained from before.
Sleep and memory
Does it help to sleep on the installation of information in memory?
Believed that sleep plays an important role in the installation of memory, there is a strong relationship between memory and type of sleep known as rapid eye movement sleep (Rapid-Eye Movement (REM .. If we were to deprive the students of this type of sleep after a period of learning,, the their ability to remember what they have learned weaken especially with regard to how and why not, for example, remember the names, but is not affected by solving puzzles and riddles affected.
There is evidence to indicate that there is an optimal period during which the memory handling and storage of information, if not blessed with the kind of REM sleep during this period Vsbia you most of what I've learned. But how does it happen? Scientists say you during REM sleep either that they strengthen memories or information that is not strengthened after the weakening or information that has been installed by even can be used in places or Tusiladtha new information storage .. It's a reasonable theory, but may not explain the whole picture,
REM sleep is not only important in this process, the other type of sleep known as slow-wave sleep (Slow-Wave Sleep (SWS) helps to learn physical skills such as learning soccer or swimming, for example.
As far as the importance of the brain, to the extent of the disaster, which occur if the injury is a tumor brain tumor is a growth of abnormal cells in the brain or skull. Brain tumors may be (ie cancerous and are spread) or benign (likely to spread). And brain tumors of any kind be dangerous because the developing brain tumor is not required to grow to a very large size even begin to put pressure on the rest of the brain and Tlavha parts.
There are two categories of
Cancerous brain tumors: tumors primary and secondary tumors.
Primary tumors begin within the brain tissue. The secondary brain tumors, they cancers begin in other members of the lung or breast most important, and then spread to the brain. And secondary brain tumors more common than primary tumors and occur in 25% of patients with cancers in other parts of the body. Brain tumors and infect both sexes may occur at any age, although the second tumors are more common in the later stages of life, when it increases the risk of any type of cancer.
Brain tumor symptoms ..
Some brain tumors discovered when they are still small in size where the cause epileptic seizures or bleeding. And most of them do not cause symptoms to grow to a large size enough to put pressure on nearby brain tissue and cause a malfunction such as a weakness of the arms or legs or difficulty speaking. In some cases, be the only symptoms of brain tumor sense of headache, caused by increased pressure inside the skull. Headache in a person never before felt a headache may be a warning sign. In rare cases, there is a change in the personal undue so that is the first incidence of tumor markers in the brain.
Encyclopedia big brain can not speak about all aspects but dear reader enough in this article to learn some facts about the brain
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