[Skip to Content]
[Skip to Content Landing]
Other
July 1930

OPTIC NYSTAGMUS: III. CHARACTERISTICS OF THE SLOW PHASE

Author Affiliations

Professor of Psychology; Research Associate; Assistant Clinical Professor of Neurology NEW HAVEN, CONN.

From the Institute of Psychology and the Department of Internal Medicine, Yale University School of Medicine.

Arch NeurPsych. 1930;24(1):21-34. doi:10.1001/archneurpsyc.1930.02220130024002
Abstract

It is commonly supposed that the speed of the slow phases of normal optic nystagmus varies with the speed of visual objects. The accuracy and limits of that correlation are, however, unknown. As we pointed out in the first paper of this series, the slow phase represents a kind of optic pursuit of moving objects and might be called with propriety the pursuit phase.

For the purposes of this discussion the pursuit may be called adequate when it is sufficiently accurate to permit clear vision. Whenever the line of regard lags behind or overshoots the moving object, vision became more or less blurred and the pursuit may be called inadequate. Determination of the degree of adequacy with which normal eyes pursue at various velocities of the visual object seems important, not only to provide a base line for the study of abnormalities, but also for an understanding of the mechanism

×