PSYC 3690 Chapter Notes - Chapter 9: White Noise, Conductive Hearing Loss, Tonotopy

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Threshold turning curve : a graph plotting the threshold of a neuron or fiber in response to sine waves with varying frequencies at the lowest intensity that will give rise to a response. Characteristic frequency : the frequency to which an auditory fiber is most sensitive. Isointensity curve : map of firing rates of an auditory nerve fiber against varying frequencies at varying intensities. Rate saturation : the point at which a nerve fiber is firing as rapidly as possible and further stimulation is incapable of increasing the firing rate. Rate-intensity function : a graph plotting the firing rate of an auditory nerve fiber in response to a sound of constant frequency at increasing intensities. Low-spontaneous fiber : <10 spikes per second ; require relatively internees sounds before firing at a higher rates. Higher-spontaneous fiber : >30 spikes per second; relatively lower level of sounds to increase firing.

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