Vestibular Habituation Induced by Foveolar and Retino-Peripheral Optokinetic Training

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Abstract
Habituation of rotatory nystagmus induced by different sorts of optokinetic training is studied in man, with special regard to the interaction of peripheral vision (optokinetic system) and foveolar vision (pursuit system). Optokinetic training which stimulates the two systems in the same direction increases the vestibular nystagmus, whereas training conditions with contradirectional stimulation of the two systems decreases the vestibular response. A model of this interaction is proposed that emphasizes the predominance of the pursuit system considering the generated eye movements and transfer phenomena between the visual and the vestibular system. Transfer phenomena as well as response enhancement after repetitive stimulation are consistent with a more recent definition of habituation.

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