1D Linear Cochlear Model for the gerbil R. Naidu and D. Mountain Cochlear Biophysics Laboratory Boston University Hearing Research Center The model computes Pressure difference and the BM volume velocity by picking a number for the fluid volume velocity through the helicotrema and then working back towards the base. At each section the fluid volume velocity is computed by adding the fluid volume velocity from the previous section to the basilar membrane volume velocity. The pressure drop across the fluid due to this velocity is then computed and added to the pressure difference across the cochlear partition. Since the model is linear, the results above can then be scaled to the pressure difference at the stapes. The Matlab file is self contained and can be run by just typing the name PBmodel at the matlab prompt. This and other auditory models are available at EarLab, a digital warehouse of auditory models and data.