ALTERNATE BINAURAL LOUDNESS BALANCE TEST(ABLB)
This technique was initially described by Fowler, 1986, but corresponding modifications were proposed by Hood & Jerger in new course. Currently Fowler’s ABLB is the most preferred and commonly used procedure with Hood & Jerger modifications whereas, the technique or MLB was described by Rager 1936, which is helpful in detecting the recruitment in clients with bilateral hearing loss. ABLB compares loudness growth between 2 different frequencies in the same ear. ABLB is a pure tone test which is done when there is a threshold difference of more than 20 dB between ears at the test frequencies and the better ear is relatively normal. The purpose of ABLB test is to compare the growth of loudness in an impaired ear with the normal growth of loudness in the opposite / normal ear. Test approach Jerger protocol: In this protocol devised by Jerger tone alters between two ears every 500 milliseconds, with fixed level in abnormal ear and variable signal in
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