[The topodiagnostic value of direction of cervical nystagmus in vertebro-basilar insufficiency].

The estimation of the topodiagnostic value of cervical nystagmus and its changes in vertebrobasilar insufficiency was the aim of this work. The analysis was performed on 79 patients with the positive cervical nystagmus test. There was not any correlation between the side of neurologic signs, the level of CNS damage and the direction of cervical nystagmus. The changes of nystagmus direction are usefulness topodiagnostically too.