Evaluation of the impact of a special sound signal on the functional state of the hearing organ (experimental study)

Introduction. The integration of special acoustic means into the safety system makes it relevant to conduct biomedical research evaluate impact their effects on hearing organs. Objective. To study characteristics a sound signal and its effect organ an experimental biological model. Materials methods. was conducted 6 males (12 ears) guinea pigs (Cavia porcellus) weighing 200–250 grams at age 4 weeks. A set audio equipment used generate signal. in room with area about 47 m 2 . time single exposure animals 3 minutes level 127–128 dBA. Before different times after (after 24 72 hours), otoscopic picture evaluated, Preyer’s reflex distortion-product otoacoustic emissions (DPOAEs) carried out. Results. characterized by distinct frequency components can be attributed tonal noises. After signal, normal observed animals. Restoration occurred hours exposure. restoration DPOAEs background values frequencies from 1.5 3.3 kHz exposure, 4.2 there significant tendency recovery. Conclusions. With short-term (within three minutes) 127 128 dBA models (guinea pigs), no pathology detected. Given greater resistance humans effects, compared pigs, this equally extended humans.