Ocular bobbing: abnormal eye movement or eye movement's abnormality?

Abstract

Ocular bobbing is classified as an abnormal eye movement, resulting from pathological neuronal activity of the brain stem after bilateral pontine lesions. Clinical oculographic study of 5 patients suffering from ocular bobbing shows that upwards voluntary eye movements are abnormal. We suggest that ocular bobbing should not to be regarded as an abnormal eye movement, but, rather, as the only residual movement of patients which are totally deprived of both horizontal and upward movements.