Three-dimensional eye movement recordings during magnetic vestibular stimulation
| Autor: | Bryan K. Ward, Dale C. Roberts, David S. Zee, Jorge Otero-Millan, Michael C. Schubert |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male 0301 basic medicine medicine.medical_specialty Eye Movements genetic structures Stimulation Nystagmus Audiology 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine Nystagmus Physiologic Vertigo otorhinolaryngologic diseases medicine Humans Aged Vestibular system medicine.diagnostic_test biology business.industry Eye movement Magnetic resonance imaging Anatomy Middle Aged biology.organism_classification Semicircular Canals eye diseases 030104 developmental biology Neurology Eye tracking Female sense organs Neurology (clinical) Vestibulo–ocular reflex medicine.symptom business 030217 neurology & neurosurgery |
| Zdroj: | Journal of Neurology. 264:7-12 |
| ISSN: | 1432-1459 0340-5354 |
| Popis: | Human subjects placed in strong magnetic fields such as in an MRI scanner often feel dizzy or vertiginous. Recent studies in humans and animals have shown that these effects arise from stimulation of the labyrinth and are accompanied by nystagmus. Here, we measured the three-dimensional pattern of nystagmus using video eye tracking in five normal human subjects placed in a 7T MRI to infer which semicircular canals are activated by magnetic vestibular stimulation. We found that the nystagmus usually had a torsional as well as a horizontal component. Analysis of the relative velocities of the three eye movement components revealed that the lateral and anterior (superior) canals are the only canals activated, and by a similar amount. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink