Cerebellar Defects Detectable by Electronystagmography Calibration

Electronystagmography and the diagnosis of a cerebellar tumour

“…manifestation of ocular dysmetria, which is an excellent sign of cerebellar defect. Haring and Simmons (1973) reviewed about 2,248 consecutive E.N.G. 's and, of 40 patients with calibration overshoots, 33 had confirmed cerebellar defects, five had no confirmed cerebellar disease and 2 had no confirmed follow-up.…”

The Electronystagmography Test Battery: Hit or Myth?

“…Ocular dysmetria is an over-or undershoot of ocular movement when visual fixation is transferred from one point to another. Haring and Simmons (1973) indicate that the phenomenon may be observed during the calibration phase of the ENG examination, when the patient is required to fix his gaze alternately between two points equidistant from midline. They have published records of ocular dysmetria and have suggested that a minimum of 50 percent of the calibration fixations be off target before a label of ocular dysmetria is assigned.…”