Evidence for three-dimensional cortical control of gaze from epileptic patients.
J Neurol Neurosurg Psychiatry
; 80(6): 683-5, 2009 Jun.
Article
en En
| MEDLINE
| ID: mdl-19448095
Electrophysiological studies in primates indicate that the eye fields of the cerebral hemispheres control gaze in three-dimensional space, and contain neurons that encode both conjugate (versive) and vergence eye movements. Two patients with epilepsy who exhibited disconjugate contraversive horizontal eye movements are described, one during electrical stimulation of the frontal eye fields and the other during focal seizures. We postulate that these eye movements resulted from combined contralateral version and vergence, and suggest that human cortical eye fields also govern visual search in a three-dimensional world, shifting the point of fixation between targets lying in different directions and at different depths.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Procesamiento de Imagen Asistido por Computador
/
Imagen por Resonancia Magnética
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Epilepsias Parciales
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Convergencia Ocular
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Imagenología Tridimensional
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Percepción de Profundidad
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Movimientos Oculares
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Fijación Ocular
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Lóbulo Frontal
Límite:
Adult
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Humans
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Male
Idioma:
En
Revista:
J Neurol Neurosurg Psychiatry
Año:
2009
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Reino Unido