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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Iterative Fragmentation of Cognitive Maps in a Visual Imagery Task
PLoS ONE, Volume 8, No. 7, Article e68560, Year 2013
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Description
It remains unclear whether spontaneous eye movements during visual imagery reflect the mental generation of a visual image (i.e. the arrangement of the component parts of a mental representation). To address this specificity, we recorded eye movements in an imagery task and in a phonological fluency (non-imagery) task, both consisting in naming French towns from long-term memory. Only in the condition of visual imagery the spontaneous eye positions reflected the geographic position of the towns evoked by the subjects. This demonstrates that eye positions closely reflect the mapping of mental images. Advanced analysis of gaze positions using the bi-dimensional regression model confirmed the spatial correlation of gaze and towns' locations in every single individual in the visual imagery task and in none of the individuals when no imagery accompanied memory retrieval. In addition, the evolution of the bi-dimensional regression's coefficient of determination revealed, in each individual, a process of generating several iterative series of a limited number of towns mapped with the same spatial distortion, despite different individual order of towns' evocation and different individual mappings. Such consistency across subjects revealed by gaze (the mind's eye) gives empirical support to theories postulating that visual imagery, like visual sampling, is an iterative fragmented processing. © 2013 Fourtassi et al.
Authors & Co-Authors
Fourtassi, Maryam
France, Bron
Centre de Recherche en Neurosciences de Lyon
France, Villeurbanne
Université Claude Bernard Lyon 1
France, Laval
Hopital Henry Gabrielle
France, Lyon
Hopital Neurologique et Neurochirurgical Pierre Wertheimer
Morocco, Oujda
Université Mohammed Premier Oujda
Hajjioui, Abderrazak
Morocco, Fez
Centre Hospitalier Universitaire Hassan Ii
Urquizar, Christian
France, Bron
Centre de Recherche en Neurosciences de Lyon
France, Villeurbanne
Université Claude Bernard Lyon 1
France, Laval
Hopital Henry Gabrielle
France, Lyon
Hopital Neurologique et Neurochirurgical Pierre Wertheimer
Rossetti, Yves
France, Bron
Centre de Recherche en Neurosciences de Lyon
France, Villeurbanne
Université Claude Bernard Lyon 1
France, Laval
Hopital Henry Gabrielle
France, Lyon
Hopital Neurologique et Neurochirurgical Pierre Wertheimer
Rode, Gilles
France, Bron
Centre de Recherche en Neurosciences de Lyon
France, Villeurbanne
Université Claude Bernard Lyon 1
France, Laval
Hopital Henry Gabrielle
France, Lyon
Hopital Neurologique et Neurochirurgical Pierre Wertheimer
Pisella, Laure
France, Bron
Centre de Recherche en Neurosciences de Lyon
France, Villeurbanne
Université Claude Bernard Lyon 1
France, Laval
Hopital Henry Gabrielle
France, Lyon
Hopital Neurologique et Neurochirurgical Pierre Wertheimer
Statistics
Citations: 20
Authors: 6
Affiliations: 6
Identifiers
Doi:
10.1371/journal.pone.0068560
e-ISSN:
19326203
Research Areas
Health System And Policy