Usefulness of galvanically induced nystagmus as a diagnostic test of peripheral vestibular hypofunction.

Background: Galvanic Vestibular Stimulation (GVS) has long been used as a vestibular stimulus. A major issue observed in GVS research was the high variability of the responses, which has led some researchers to question its diagnostic utility.

Objectives: Determine the diagnostic accuracy of galvanically induced nystagmus for the diagnosis of subjects with unilateral peripheral vestibular hypofunction.

Emotional reaction evaluation provoked by the vestibular caloric test through physiological variables monitoring.

Introduction And Objectives: The emotional evaluation of the causes of vertigo is made using the clinical records and several subjective questionnaires. The aim of the present study is to evaluate the emotional response objectively, in normal subjects, during an induced vertigo crisis.

Material And Method: A caloric vestibular test with cold water was performed on 30 healthy subjects.

Atypical periodic alternating nystagmus responding to high-dose intravenous immunoglobulins: a case report.

Background: Acquired periodic alternating nystagmus (PAN) is a rare but well-defined syndrome that consists of a horizontal nystagmus that cyclically reverses its direction. PAN can be caused by degenerative, neoplastic, or toxic diseases of the cerebellum and, in a few cases, by subacute cerebellar ataxia of immune origin.

Case Presentation: A 44-year-old man came to our attention because of rapidly progressive gait instability and blurred vision.