[Air conduction threshold values in expanded range of frequencies (250 Hz-18 kHz) in otologically normal persons as assessment of mobility hearing organ in presbycusis].

High-frequency hearing loss is most significant for the organ of hearing aging. Air conduction threshold measurements were taken in 4 groups (aged 31-40, 41-50, 51-60, 61-70 years) of otologically normal persons in expanded range of frequencies (250-18,000 Hz). The threshold of air conduction increase parallel to age and to pure tone frequency was stated.