Electroencephalography — subdivision electrophysiology, studying the electrical activity of the brain.
Electroencephalography enables to estimate the functional state of the brain activity and reactions to external stimuli.
Registration of bioelectric potentials of human brain activity produced by electroencephalography device by means of special electrodes, attached to a special cap-mantle system “10-20″ electrodes connected to an amplifier which is then connected through the Converter (installation) to a personal computer through a special program to be written to the rhythms of the brain (previously the record was done on a paper tape). During the study of provocation can be used photic stimulation, sound stimulation and hyperventilation. As encephalography can be performed in your sleep, deprivation sleep or daily monitoring of the EEG.
Using electroencephalography determined the adequacy of the rhythms of bioelectric brain activity (frequency, amplitude and length electromagnetic waves of the brain), as well as possible diagnosis of focal abnormal bioelectric activity (slow waves, sharp waves, complex spike-waves).
EEG data are widely used by doctors neurologists in the diagnosis of insomnia (sleeplessness), somnambulism (sleepwalking) and other sleep disorders, in the diagnosis of migraine with aura and atypical, the diagnosis of epilepsy and epileptic syndromes in the differential diagnosis of epileptic syndromes with syncopations in the differential diagnosis of complex partial epileptic seizures with panic attacks or psychotic disorders; vertigo; disorders of psycho-speech development in children, autism and autistic spectrum disorders; in the neuroresuscitation in severe toxic or post-traumatic encephalopathy with depression of consciousness, in encephalitis with delirium, for the diagnosis of the depth of coma and the assessment of vitality of the brain.
Just using electroencephalography to study the neuroplasticity of the brain and properties of meditation to consciously reallocate the bioelectrical activity in the brain areas.
Similarly, the principle of EEG is used in programs with feedback, so through mental commands, the patient could control prosthetic limbs function of complex motor skills.