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Use Of Psychometric-Function Slopes For Forward-Masked Tones To Investigate Cochlear Nonlinearity, Kim Schairer, Jessica Messersmith, Walt Jesteadt
Use Of Psychometric-Function Slopes For Forward-Masked Tones To Investigate Cochlear Nonlinearity, Kim Schairer, Jessica Messersmith, Walt Jesteadt
Kim S. Schairer
Effects of peripheral nonlinearity on psychometric functions for forward-masked tones demonstrated that cochlear nonlinearity is reflected in psychometric-function (PF) slopes for 4 kHz forward-masked tones. The goals of the current study were to use PF slopes to compare the degree of compression between signal frequencies of 0.25 and 4 kHz in listeners with normal hearing (LNH), and between LNH and listeners with cochlear hearing loss (LHL). Forward-masked thresholds were estimated in LNH and LHL using on- and off-frequency maskers and 0.25 and 4 kHz signals in three experiments. PFs were reconstructed from adaptive-procedure data for each subject in each condition. …