STATE OF SESONEURAL HEARING LOSS ACCORDING TO IN PATIENTS WITH SENSORINEURAL HEARING LOSS STARTING WITH THE CONNECTIVE VERTEBRA-BASILAR VASCULAR INSUFFICIENCY

Abstract

The paper studied the brain activity by electroencephalography data in 75 patients with early stages of sensorineural hearing loss at vertebra-basilar vascular insufficiency, of which 34 patients (group 1) on hearing tones in conventional (0,125-8) was kHz frequency range in the normal range, and extended (9-16) kHz - was broken. In 41 patients (group 2) hearing loss occurred as conventional as well as extended. Control - fully 20 healthy individuals from 18 to 30 years. Revealed that in the early stages of sensorineural hearing loss in combination with vertebra-basilar vascular insufficiency develop irritation cortical brain structures, as evidenced by a significant increase in the representation of beta activity in the temporal and occipital regions of the brain compared with a control group of healthy normalnochuyuchyh persons . Such patients it is advisable to include a group of “risk” and their timely treatment and preventive measures include data from EEG. It was established that with increasing severity of sensorineural hearing loss in combination with vertebra-basilar vascular insufficiency an increase and functional changes in the central nervous system. More pronounced disturbances in cortical brain structures according to the EEG revealed in patients where hearing loss in tone occurs not only in the expanded (9-16 kHz) frequency range, but in conventional, often ranging from 2-3 kHz. The studies deepen our knowledge of neurological manifestations in the studied patients and are more functional and diagnostic information in the early stages of sensorineural hearing loss of connective vertebra-basilar vascular insufficiency, and will contribute to carrying out targeted preventive measures.

Keywords

• sensorineural hearing loss, early diagnosis, cerebral hemodynamics, audiometry, electroencephalography.