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August 1962

The Cortical Influence on the Vestibular Apparatus

Arch Otolaryngol. 1962;76(2):158-166. doi:10.1001/archotol.1962.00740050164010

It has been assumed for a long time that the cerebral cortex can have an influence upon the vestibular apparatus, since in man voluntary eye movements in the direction of the fast component of spontaneous or experimental nystagmus usually increase its intensity.

In animals (cats or rabbits) a so-called directional preponderance of induced labyrinthine nystagmus develops to the side of the operation following ablation of a cerebral hemisphere (Korany and Loeb,16 Bauer and Leidler,2 Wilson and Pike,25 Dusser de Barenne and deKleyn6), or after certain lobectomies (Wycis and Spiegel26). This means that after caloric stimulation of the right and left labyrinths, each with hot and then cold water, or rotating the animal to the right and then to the left, the duration and/or the frequency of the induced nystagmus is usually increased to the side of the lesion; sometimes it is also decreased to the

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