Today's life is unthinkable without computers and mobile communications.. They are used everywhere and adults, and children. Computers have firmly entered the school system of education.. They help the child to increase the amount of information, activate his cognitive activity, expand their horizons.

Possible negative consequences

Along with the undoubted benefits and advantages of the computer, unsystematic and prolonged sitting behind him, non-compliance with protection and security measures, can bring great harm to a growing child's body and cause a number of adverse reactions on its part. It's about, primarily, about the central nervous system (central nervous system), visual analyzer, musculoskeletal system, whose normal development may be impaired. Since not only the eyes get tired, but also the CNS (rhythmicity of signals, may provoke attacks of up to a fraction of a second of interruptions in consciousness or a fit of lightheadedness, suffocation).

The basis for the occurrence of such disorders is the increased convulsive readiness of the child's body.. Known cases of "television epilepsy" in children and adolescents.

Psychologists warn about drug use, затягивающем влиянии компьютерных игр, about the possibility of aggressive, ruthless behavior of the child under their influence.

Changes in the functional state of the child depend on age: the younger the age, тем ребенок более подвержен вредному влиянию компьютера.

A special burden falls on the eyesight. If the child is long, without interruption does not come off the monitor, then visual fatigue can lead to a steady decrease in visual acuity.

In the course of communication with a computer, children have to solve gradually more complex spatial and logical tasks.. And this requires significant mental and visual stress., since at a fairly close distance you have to consider small letters on the screen, drawings, numbers, fonts. Periodically looking from the screen to the keyboard, the child constantly rebuilds the accommodation system of the eye (the ability of the eye to adapt to viewing objects at different distances). It causes tension in the eye muscles, which are amplified by the light pulsation of the screen. Let's add a static pose here, which increases the load on the spine and reduces motor activity. This leads to curvature of the spine, scoliosis, early muscle disease, joints, etc..

How to prevent unwanted consequences?

First of all, you need:

• Note on monitor specifications.
• Preference should be given LCD monitors or monitors with anti-glare and anti-static coatings.
• Although modern monitors and meet all safety standards, it is necessary to comply with the requirements for the workplace of the computer user. These include:
• Room area for one person - at least 6 m² for CRT monitors and 4,5 m² - for liquid crystal.
• Screen illumination should be equal to the illumination of the room. Natural lighting should be side; artificial lighting preferably bluish. Wall painting blue is recommended..
• For guard from electromagnetic and electrostatic fields, it is advisable to use special screens and other certified means.
• Need to ensure no glare on screen.
• The monitor must be on distance 40-75 see from the eyes, and the center of the screen 15-20 see below their level.
• The keyboard is located on distance 10-30 cm from the edge of the table in this way, so that the fingers are at the level of the wrists, parallel to the floor, shoulders were relaxed.
• Position of the body should be comfortable, the back of the chair is tilted back at an angle of several degrees, back shape to match the natural curves of the spine. It is advisable to use special furniture.
• To relieve fatigue recommended to take a break 5-10 min. every hour of work (the maximum allowable duration of continuous work at the computer monitor should not exceed 2 o'clock), take your eyes off the screen, warm up, do eye exercises. It is possible to use special glasses with a chromatic coating, which increase image contrast and reduce fatigue during work.

• Periodically visit an ophthalmologist.

• Should strictly adheres to the following time limits for the child's stay at the computer:

ВОЗРОСТ РЕБЕНКА ВРЕМЯ ЗА КОМПЬЮТЕРОМ

5-6 years 7 minutes

6-7 years 10 minutes

учащиеся начальных классов 15 minutes

students 5-7 классов 20 minutes

students 8-9 классов 25 minutes

students 9-10 классов 40 minutes

на сдвоенном уроке 30 минут на 1уроке,

30 minutes per 2 lesson

students 11 классов не более 3 hours.

Mobile phone

A mobile phone is no less dangerous for the child's body - if it is used improperly due to electromagnetic radiation. Radiation enters the head differently in adults and children.

Numerous studies show, what long and frequent conversations on a mobile phone lead to certain deviations in the state of health even in adults: increase in blood pressure, headache, sleep and memory disorders, telephone addiction, anxiety and deterioration in general well-being.

Today, children and teenagers actively use cellular communications.. Talking on a cell phone, they expose the brain to electromagnetic radiation for a long time, complex nerve formations in the inner ear, ensuring the normal activity of the auditory and vestibular analyzers, as well as the retina.

Children and adolescents are at increased risk of adverse health effects from electromagnetic radiation from cell phones. With frequent use of mobile phones, they noted: memory impairment, снижение внимания и умственных способностей, irritability, sleep disturbance, increased epilepsy readiness. Possible long-term consequences - tumors of the central nervous system, Alzheimer's disease, depressive syndrome, etc..

To avoid such consequences, parents should teach children, especially under the age 14 years, use mobile devices only when necessary, listen to yourself and the children to the following advice from experts:

Restrict children's access to cell phones.

Be at a distance of at least 1 m from a person, cell phone speaker.

Avoid talking on a cell phone on the bus, underground, train, while driving, а также в местах, where there is no stable signal.

Prefer messages in the format SMS.

cut down total phone conversation time 15 min per day.

Every conversation should not exceed 1 min., and a break after it - at least 5 min.

Don't carry your phone at breast or trouser pocket, on the strap, better in a bag.

Do not pick up the phone to the ear, until the called party has picked up the phone.

During a call use a freehand headset.

For the night выключать или класть мобильник на расстоянии не менее 1м от головы.

During a call always hold the device by the bottom. Holding the phone in a fist, you increase the radiation power of the apparatus by 70%, and thereby increase brain radiation.

Do not use cell phone to persons, suffering from neurological diseases, including neurasthenia, psychopathy, neuroses, epilepsy and obsessive, hysterical disorders.

All these measures will protect our children from the harmful effects of electromagnetic radiation on the children's body..