Figure 7. Mass-controlled admittance tympanograms (admittance [Y], susceptance [B], and conductance [G]) at 220/226 Hz and 660/678 Hz due to ossicular discontinuity (left panel from Feldman, 1976), tympanosclerosis (middle panel from Shanks, 1984), and secretory. otitis media (right panel from Margolis & Shanks, 1985).

Figure 7