title: Scene categorization in Alzheimer's disease: a saccadic choice task.
abstract: OBJECTIVE
  We investigated the performance in scene categorization of patients with Alzheimer's disease (AD) using a saccadic choice task.
  
  
  METHODS
  24 patients with mild AD, 28 age-matched controls and 26 young people participated in the study. The participants were presented pairs of coloured photographs and were asked to make a saccadic eye movement to the picture corresponding to the target scene (natural vs. urban, indoor vs. outdoor).
  
  
  RESULTS
  The patients' performance did not differ from chance for natural scenes. Differences between young and older controls and patients with AD were found in accuracy but not saccadic latency.
  
  
  CONCLUSIONS
  The results are interpreted in terms of cerebral reorganization in the prefrontal and temporo-occipital cortex of patients with AD, but also in terms of impaired processing of visual global properties of scenes.
authors.affiliation: Laboratoire de Neurosciences Fonctionnelles et Pathologies, Université Lille Nord de France, CNRS, Lille, France.
authors.forename: Quentin
authors.initials: Q
authors.lastname: Lenoble
authors.affiliation: Laboratoire de Neurosciences Fonctionnelles et Pathologies, Université Lille Nord de France, CNRS, Lille, France.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Bubbico
authors.affiliation: Laboratoire de Neurosciences Fonctionnelles et Pathologies, Université Lille Nord de France, CNRS, Lille, France.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Szaffarczyk
authors.affiliation: Centre Mémoire, CHU, Université Lille Nord de France, Lille, France.
authors.forename: Florence
authors.initials: F
authors.lastname: Pasquier
authors.affiliation: Laboratoire de Neurosciences Fonctionnelles et Pathologies, Université Lille Nord de France, CNRS, Lille, France.
authors.forename: Muriel
authors.initials: M
authors.lastname: Boucart
keywords: Aging; Alzheimer's disease; Eye movements; Saccade; Scene perception; Vision