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Brain regions modeled:

                Cochlea: Sense organ of hearing. Thirty thousand fibers convert motion of the stapes into spectrotemporal representations of sound.

                MC: Multipolar cells. Measure spectral energy.

                GBC: Globular bushy cells. Relay spikes from the auditory nerve to the lateral superior olivary complex (includes LSO and MSO). Encoding of timing and amplitude of signals for binaural comparison of level.

                SBC: Spherical bushy cells. Provide temporal sharpening of time of arrival, as a preprocessor for interaural time-difference calculation (difference in time of arrival between the two ears, used to tell where a sound is coming from).

                OC:Octopus cells. Detection of transients.

                DCN: Dorsal cochlear nucleus. Detection of spectral edges and calibrating for noise levels.

                VNTB: Ventral nucleus of the trapezoid body. Feedback signals to modulate outer hair-cell function in the cochlea.

                VNLL, PON: Ventral nucleus of the lateral lemniscus; peri-olivary nuclei: processing transients from the OC.

                MSO: Medial superior olive. Computing interaural time difference.

                LSO: Lateral superior olive. Also involved in computing interaural level difference.

                ICC: Central nucleus of the inferior colliculus. The site of major integration of multiple representations of sound.

                ICx: Exterior nucleus of the inferior colliculus. Further refinement of sound localization.

                SC: Superior colliculus. Location of auditory/visual merging.

                MGB: Medial geniculate body. The auditory portion of the thalamus.

                LS: Limbic system. Comprising many structures associated with emotion, memory, territory, et cetera.

                AC:Auditory cortex.

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