title: [Brain organization of recognition of fragmented pictures in subjects who show different levels of the task performance success].
abstract: We studied the behavioral and EEG changes in healthy adults during the recognition of fragmented pictures presented in a series beginning with a low fragmentation level up to the complete figure. Our sample was divided into two groups according to the recognition success. The first group had a small amount of mistakes. The other group had a significantly higher amount of mistakes as compared to the first group; this group had a lower reaction time and recognition threshold (i.e. the fragmentation level at which the object became recognizable). The ERP analysis showed the statistical dependence between the recognition success and the involvement of the frontal and caudal cortical areas. As compared to the second group, in the first one we found no significant association between the recognition process and both early and late ERP components in the dorsolateral prefrontal cortex; we found the increase of sensory-specific components P1 and P2 in caudal areas. These results support the hypothesis of the impact of the prefrontal cortex on the successfulness of recognition of fragmented pictures.
authors.forename: N E
authors.initials: NE
authors.lastname: Petrenko
authors.forename: D A
authors.initials: DA
authors.lastname: Farber
mesh_terms: D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D021641:Recognition, Psychology / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*