METHOD OF DETERMINING DISPERSION OF AMPLITUDE-FREQUENCY CHARACTERISTICS OF BRAIN ALPHA-RHYTHM IN CASE OF MENTAL ILLNESSES Russian patent published in 2014 - IPC A61B5/476 

FIELD: medicine.

SUBSTANCE: invention relates to field of medicine, namely to neurophysiological methods of examination. Registration of EEG is carried out, total power of modal fluctuation in alpha-rhythm range in one of leads is determined and FRα₁ index is calculated as ration of said power to total power of all alpha range fluctuations in the same lead. Value of the sum of power of fluctuations, located ±0.5 Hz on the right and on the left from maximal power value, including maximal value, is determined, and FRα₂ index is calculated as ratio of the obtained sum of power to total power of all fluctuations of alpha-range in the same lead. Intensity of brain affection is determined by comparison of obtained FRα₁ and FRα₂ values with standard values.

EFFECT: method makes it possible to determined quantitative ratio of alpha-rhythm, characteristic of separate nosologic units in psychiatry.

2 tbl, 1 dwg