内側膝状体破壊による聴性中間反応の変化

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  • The Changes of Middle Latency Response After Medial Geniculate Body Destruction in Cat

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The middle latency response (MLR) was examined in cats under general anesthesia with nembutal.<br>A longitudinal section from the frontal lobe to the superior colliculi and a transvers section from the mid-line passing the left superior colliculi to the right side, and the same procedure in the inferior colliculi were made.<br>Uni- and bilateral medial geniculate bodies were destroyed by injection of Moljodol (contrast media) and by electrocoagulation.<br>The changes of MLR were recorded immediately and seven days after medial geniculate body destruction, and the areas were histologically examined.<br>The results were as follows:<br>1) The MLR was generated at the upper level of the superior colliculi.<br>2) Na component of MLR was mainly related to the contralateral medial geniculate body, and Pa component was suggested to be the compound response from a wide central area.

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