The EEG of the brain
The state of the brain can be detected by modern diagnostic methods. One of the most popular in medical practice, electroencephalography (EEG). The study allows the precise set of neurological, neurosurgical diagnoses (with the exception of mental illness). This Method is a simple procedure and safe.
What is a EEG of the brain
The man’s head like a miniature hydroelectric power station generates electric pulses. Though very weak, but they can be capture devices. This principle is based encephalography of the brain. Method of studying the work of the authority is to fix the parameters of its electrical activity. The result of the examination the doctor gets an EEG of the brain in the form of curves. The interpretation of these graphs» – the key to accurate diagnosis.
The EEG of the brain is removed with the help of numerous electrodes attached to a patient’s head. Passing on them the impulses are recorded on paper. Normal brain function depends on the state and structure of the trunk and the two hemispheres. They define the major parameters of the EEG regularity, symmetry, dynamics, rhythms.
The reason for this analysis of the brain may be:
- a suspected stroke, epilepsy, encephalitis, meningitis, poliomyelitis, tumor;
- head injury;
- brain surgery;
- frequent fainting;
- persistent headaches for no apparent reason;
- cramps unexplained nature;
- severe hypertension;
- cervical osteochondrosis;
- long-term insomnia;
- the backlog of the child in mental development, problems with speech.
The function of the brain while recording EEG, the doctor checks using tests. These include the following tasks:
- several times to open and close the eyes;
- 3-4 minutes to breathe deeply and infrequently;
- compress fingers in a fist;
- sit with your eyes closed during the bright flares of light;
- to spend 40 minutes in a dark room;
- to perform several psychological tests.
In addition to daily research, carries out a monitoring of the night. The EEG of brain structures is a painless and harmless procedure. Not to be confused with REG and EEG with PEG. REG(rheoencephalography) – method studies of brain vessels. PEG (pneumoencephalography) – x-ray examination of the disease developing inside the skull. PEG is often prescribed magnetic (more precisely, magnetic resonance) imaging.
How much is
Large range of prices. The cost of the EEG of the brain in municipal health centres varies from 500 to 1500 rubles. This is the cheapest option. In large cities the EEG is more expensive. Examination of the brain in commercial clinics is an average of from 1400 to 3800 rubles. This difference is explained by the qualification of specialists, provision of additional diagnostic tests and services. If the EEG is done at home, the price increases several times.
In the vast majority of clinics the EEG is performed. An adult patient can be examined in the neurological Department of the district or city hospital, in a psychiatric clinic. Provide this service multidisciplinary private clinics. EEG children and adolescents are doing in the neurological departments of children’s hospitals. There accept new patients up to 14 years. Infants EEG recording in many children’s clinics.
Whether the EEG for driver help
EEG is required to manage transport categories CE, C1, C1E, D, DE, D1, D1E, Tm, Tb. Registration certificate for driving license, should start with an appointment with your local therapist. He may appoint a neurologist. For driving vehicles of categories A, A1, B, BE, B1, M the EEG is mandatory only in his direction.
What is REG
Rheoencephalography helps to analyze the blood vessels of the brain. The principle of this method is based on the change in the resistance of living tissue, when it is passed through them weak electric current of high frequency. REG blood vessels of the brain are able to demonstrate the tone and elasticity of veins and arteries, the obstructions to normal circulation.
As with the recording of EEG, electrodes attached to a patient’s head, if necessary – in addition to temple, the bridge of the nose. The patient is encouraged to change posture, look around, take nitroglycerin. REG helps to obtain data that may indicate the presence of:
- intracranial hematomas;
- of atherosclerotic plaques;
- narrowing of the arterial vessels;
- increased intracranial pressure;
- ischemia – acute oxygen starvation of the tissues;
- forced movement of blood through the collaterals (network of small vessels to bypass the major arteries, veins) thrombosis.
That shows electroencephalogram of the brain
EEG provides a comprehensive view of how the brain works at high physical and mental performance during wakefulness and sleep man. For neurologists the EEG head is truly priceless, as it helps quickly diagnose inflammatory, vascular, degenerative pathology. Only with the help of EEG is possible to define epilepsy, to identify the localization of intracranial injury, cysts, tumors.
In addition, the EEG brain – infallible expert, who with the help of a light or sound tests are distinguished by the actual loss of hearing or vision from the simulation. EEG is indispensable in intensive care units for monitoring patients after heavy injuries, operations, or fell into a coma. Finally, the EEG can confirm the death because it ceases to receive signals of electrical activity of the human brain.
Of the brain EEG in children
The procedure is slightly troublesome when you have to examine a small child. The baby laid on the changing table or the mother holding him in her arms. It is important that the child for about 20 minutes did not move, did not cry and held his head straight. Tilt it is impossible, because the device can commit random evidence, and the results will be unreliable. Ultra-low power currents ensures complete safety of the procedure even for newborns.
The EEG in children under 3 years of age is recorded only in the stage of sleep. Older kids may not sleep. The main thing – the child should be calm during the procedure, so it is advisable to take him a book or toy. Electroencephalography of brain structures helps to determine the level of mental, verbal, mental and physical development of children, risk of epilepsy. If the child is hysterical, the procedure is performed with sedation: a state of mild sleep medication.
Transcript of confinement EEG
The thalamus is an important region of the brain – sets the rhythms of the four basic types, a regularity which the doctor analyzes:
- α (alpha) rhythm with a frequency of 8-14 Hertz describes a state of rest, when the person is not sleeping;
- β (beta)-rhythm in the range of 13-30 Hz appears in periods of depression, anxiety, worry;
- δ (Delta) is a rhythm from 0.5 to 3 Hz recorded mostly during sleep;
- τ (theta) rhythm with a frequency of 4-7 Hz typical children and sleeping adults.
The EEG was considered normal if:
- dominated by α — and β-rhythms;
- the electrical activity of the brain structures is the same in both hemispheres;
- cause a local reaction to light test, but the overall activity of the brain does not change.
When fixed δ and τ-rhythms, these are signs of serious abnormalities in the Central nervous system. Bursts of electrical activity may indicate the presence of tumors, intoxications, hidden infections, stroke, epilepsy. Electroencephalography of the brain – a test that has no absolute contraindications. EEG cannot be done with the flu, SARS. If there are convulsive or mental attack or the patient is sick with severe hypertension, angina, the EEG must be recorded in the presence of an anesthesiologist.