Artículo
Looking for a face in the crowd: Fixation-related potentials in an eye-movement visual search task
Kaunitz, Lisandro N.; Kamienkowski, Juan Esteban
; Varatharajah, Alexander; Sigman, Mariano
; Quian Quiroga, Rodrigo; Ison, Matias Julian
Fecha de publicación:
12/2013
Editorial:
Elsevier
Revista:
Journal Neuroimag
ISSN:
1053-8119
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Despite the compelling contribution of the study of event related potentials (ERPs) and eye movements to cognitive neuroscience, these two approaches have largely evolved independently. We designed an eye-movement visual search paradigm that allowed us to concurrently record EEG and eye movements while subjects were asked to find a hidden target face in a crowded scene with distractor faces. Fixation event-related potentials (fERPs) to target and distractor stimuli showed the emergence of robust sensory components associated with the perception of stimuli and cognitive components associated with the detection of target faces. We compared those components with the ones obtained in a control task at fixation: qualitative similarities as well as differences in terms of scalp topography and latency emerged between the two. By using single trial analyses, fixations to target and distractors could be decoded from the EEG signals above chance level in 11 out of 12 subjects. Our results show that EEG signatures related to cognitive behavior develop across spatially unconstrained exploration of natural scenes and provide a first step towards understanding the mechanisms of target detection during natural search.
Palabras clave:
EEG
,
FACES
,
NATURAL SCENES
,
ODDBALL
,
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
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Kaunitz, Lisandro N.; Kamienkowski, Juan Esteban; Varatharajah, Alexander; Sigman, Mariano; Quian Quiroga, Rodrigo; et al.; Looking for a face in the crowd: Fixation-related potentials in an eye-movement visual search task; Elsevier; Journal Neuroimag; 89; 12-2013; 297-305
Compartir
Altmétricas