High-frequency audiometry in young and older adults when conventional audiometry is normal

Transmyringeal ventilation tube treatment in children: Hearing outcome after 10 years

“…It could be suspected that HFA is more sensitive in predicting hearing impairment later in life [11][12][13][14]. If so, the findings presented in this study among the VT treated group seem to suggest that this group will experience decreased and clinically significant hearing levels (which could be sensorineural) in the future compared to the population as a whole.…”

“…This was combined with a standard audiometry as well as a high frequency audiometry. High frequency audiometry is considered to be more sensitive for early detection of hearing impairment [11][12][13][14], but this has not been confirmed prospectively. The possible high frequency impairment of hearing following SOM and VT treatment has not been extensively studied, only one study covering this subject was found [7].…”

Contrast sensitivity test and conventional and high frequency audiometry: information beyond that required to prescribe lenses and headsets

“…High frequency audiometries for normal hearing obtained at the Hospital Italiano of Buenos Aires [20] Concerning the plot -I threshold vs f, in conventional audiograms the frequencies often considered [16] are such that f=f o 2 k , f o being a fixed value usually equal to 250Hz and k=log 2 (f)-log 2 (f o ) a real number usually integer so that octaves are taken into account while in high frequency audiograms, k is not always an integer [17]. Moreover many authors do not use scientific notation in the absisas e.g.…”

“…Moreover many authors do not use scientific notation in the absisas e.g. Monteiro et al [17] consider conventional and high frequencies (0.25; 0.5; 1; 2; 3; 4; 6; 8; 10; 12.5; 16kHz) and plot f=f o 2 k in a linear scale and Reis et al [18] consider high frequencies (9; 10; 11.2; 12.5; 14; 16kHz) and a linear scale. In Fig.1 (right panel) we show an audiogram supplied in the Tutorial [19] of the audiometer AC40 of Interacoustics (which manufactures high frequency audiometers since 1986), frequencies f=f o 2 k (with f o =0.125 kHz, k real and 0<k<6) are scientifically plotted.…”

“…There are both objective and subjective tests to evaluate visual and auditory performance. In this work we consider two subjective tests that are based in Fourier theory [2]; are similar to each other [3,4] and measure sensitivity as a function of spatial and temporal frequency respectively, the contrast sensitivity test [3][4][5][6][7][8][9][10][11][12][13] and conventional and high frequency pure tone audiometry [14][15][16][17][18][19][20][21][22]. In Table 1 we summarize a parallelism between the eye and ear which we treat in more detail in the following sections.…”