THE CONDUCTION OF LABYRINTHINE IMPULSES TO THE CORTEX

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Abstract
Spiegel''s observation that after strychninization of the gyri ecto- and supra-sylvius post. in cats and dogs stimulation of the labyrinth can produce epileptiform convulsions is confirmed. In experiments in which 1 labyrinth was destroyed and the above cortical areas were strychninized on the same and then on the opposite side, rotation still produced epileptiform convulsions, indicating that each labyrinth is connected with the crossed as well as the homolateral cortex. After total severance of the post. long. fasc. rotation still caused epileptiform convulsions when the gyri supra- and ectosylvius were strychninized, indicating that labyrinthine impulses may reach the cortical centers not only by way of the post. longitudinal bundle but also by other tracts.

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