At the medullary level, the medial lemniscus is found dorsal to the pyramidal tract and medial to the olivary nucleus. |
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Dorsolateral to the pyramidal tract, the medial accessory olivary nucleus, which is not present at lower levels, has just appeared. |
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More precisely, the signals from the two ears first converge in the superior olivary complex, located in the olivary body. |
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In the medulla, note the elongated gray olivary nucleus, with its slit-like hilus, directed dorsomedially. |
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The ventral medulla also houses another set of paired structures, the olivary bodies, which are located laterally on the pyramids. |
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There they are joined by the fibres from the ventral cochlear nuclei of both sides and from the olivary complex. |
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From the superior olivary complex, a region in the medulla oblongata, there arises also a fibre tract called the olivocochlear bundle. |
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The dendrites of the pontine neurons are not as hodophobic as those of the inferior olivary nucleus. |
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A comparison between the responses of the two ears first becomes possible at the superior olivary complex, which receives fibres from both cochlear nuclei. |
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Electrophysiological experiments in animals have shown that some neurons of the accessory nucleus of the olivary complex respond to impulses from both ears. |
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Some fibres from the ventral cochlear nucleus pass across the midline to the cells of the superior olivary complex, whereas others make connection with the olivary cells of the same side. |
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