The aim of this study was to establish an animal model of acoustically evoked vestibulo-collic reflex using guinea pigs. A special clamp was applied to restrain the head and body of the guinea pigs, but leaving its four legs free. Each animal underwent vestibular evoked myogenic potential (VEMP) and caloric tests using clip electrode method without general anesthesia or decerebrate surgery. The...

Background: Gait imbalance and oscillopsia are frequent complaints of bilateral vestibular loss (BLV). Video-head-impulse testing (vHIT) of all six semicircular canals (SCCs) has demonstrated varying involvement of the different canals. Sparing of anterior-canal function has been linked to aminoglycoside-related vestibulopathy and Menière’s disease. We hypothesized that utricular and saccular i...

MATERIALS and METHODS: Caloric tests, cervical vestibular evoked myogenic potentials (cVEMPs), and SVV deviations were studied in a group, including 20 patients with migraine without aura (MoA), 24 patients with vestibular migraine (VM), 20 patients with tension-type headache (TTH), and 30 healthy controls. SVV deviations were measured using a translucent bucket. The procedure was repeated 10 t...

OBJECTIVE To use a combination of electrophysiological techniques to determine the extent of preserved muscle activity below the clinically-defined level of motor-complete spinal cord injury. METHODS Transcranial magnetic stimulation and vestibular-evoked myogenic potentials were used to investigate whether there was any preserved muscle activity in trunk, hip and leg muscles of 16 individual...

Ocular vestibular evoked myogenic potentials (oVEMPs), subjective visual vertical (SVV), and fundus photographically measured binocular cyclorotation (BCR) are diagnostic tests to assess utricular function in patients with vertigo or dizziness. In 138 chronic dizziness, we asked whether the asymmetry ratio of oVEMP (normal, right side pathological, left pathological) could predict SVV deviation...

background :preterm birth is a significant global health problem with serious short- and long-term consequences. this study examined the long term effects of preterm birth on vestibular evoked myogenic potentials (vemps) among preschool-aged children.   methods : thirty-one children with preterm and 20 children with term birth histories aged 5.5 to 6.5 years were studied. each child underwent v...