Artículo
Fixation-related potentials in visual search: A combined EEG and eye tracking study
Fecha de publicación:
07/2012
Editorial:
Association for Research in Vision and Ophthalmology
Revista:
Journal of Vision
ISSN:
1534-7362
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Resumen
We report a study of concurrent eye movements and electroencephalographic (EEG) recordings while subjects freely explored a search array looking for hidden targets. We describe a sequence of fixation-event related potentials (fERPs) that unfolds during ̃ 400 ms following each fixation. This sequence highly resembles the event-related responses in a replay experiment, in which subjects kept fixation while a sequence of images occurred around the fovea simulating the spatial and temporal patterns during the free viewing experiment. Similar responses were also observed in a second control experiment where the appearance of stimuli was controlled by the experimenters and presented at the center of the screen. We also observed a relatively early component (̃150 ms) that distinguished between targets and distractors only in the freeviewing condition. We present a novel approach to match the critical properties of two conditions (targets/distractors), which can be readily adapted to other paradigms to investigate EEG components during free eye-movements. © 2012 ARVO.
Palabras clave:
Erp
,
Eye Movements
,
Target Detection
,
Visual Search
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Kamienkowski, Juan Esteban; Ison, Matias Julian; Quiroga, Rodrigo Quian; Sigman, Mariano; Fixation-related potentials in visual search: A combined EEG and eye tracking study; Association for Research in Vision and Ophthalmology; Journal of Vision; 12; 7; 7-2012; 1-20
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