Ascending Pathways to the Inferior Colliculus Via the Superior Olivary Complex in the Rufous Horseshoe Bat, Rhinolophus Rouxii
In all species of mammals a number of parallel auditory pathways ascend to the inferior colliculus, but the relationships among these pathways at their targets are poorly understood. The pathways which project via the medial and lateral nuclei of the superior olivary complex (MSO and LSO) receive extensive bilateral input from the cochlear nuclei. For this reason they are probably the first stage in processing binaural cues for localizing sound in space. The projection area of MSO and LSO in the inferior colliculus can therefore be considered to be a structural definition of the binaural region of the inferior colliculus. In this study we sought to define the binaural region in the inferior colliculus of Rhinolophus rouxii by the method of anterograde axonal transport from physiologically defined areas within the superior olivary complex.
KeywordsInferior Colliculus Central Nucleus Cochlear Nucleus Anterograde Transport Lateral Superior Olive
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