Cochlear Nonlinearity for Complex Stimuli

摘要: For pure-tone stimulation the cochlea behaves less linearly for frequencies around and above characteristic frequency (CF) than below CF. In present paper it is investigated whether this also case complex stimuli. Mongolian gerbils were used as experimental animals. Two-octave bands of pseudo-random noise, centred at CF nerve fibre, Recordings made action potentials in fibres auditory nerve. Contributions various to firing probability examined by signal-processing techniques. At low levels stimulation, from 20 40 dB SPL per third octave, stimulus-response relation had a smaller slope part excitatory signal comprising lower frequencies. level 80 octave high was equal or larger that Comparison with results software simulation nonlinear filtering indicates findings cannot be explained simple no-memory compression high-frequency components stimulus.