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Article Dans Une Revue Brain Research Année : 2006

Neural correlates of spatial frequency processing: A neuropsychological approach

Olivier Gout
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Jacques Moret
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Résumé

We examined the neural correlates of spatial frequency (SF) processing through a gender and neuropsychological approach, using a recognition task of filtered (either in low spatial frequencies/LSF or high spatial frequencies/HSF) natural scene images. Experiment 1 provides evidence for hemispheric specialization in SF processing in men (the right hemisphere is predominantly involved in LSF analysis and the left in HSF analysis) but not in women. Experiment 2 aims to investigate the role of the right occipito-temporal cortex in LSF processing with a neurological female patient who had a focal lesion of this region due to an embolization of an arterioveinous malformation. This study was conducted 1 week before and 6 months after the surgical intervention. As expected, after the embolization, LSF scene recognition was more impaired than HSF scene recognition. These data support the hypothesis that the right occipito-temporal cortex might be preferentially specialized for LSF information processing and more generally suggest a hemispheric specialization in SF processing in females, although it is difficult to demonstrate in healthy women.

Dates et versions

hal-00372324 , version 1 (31-03-2009)

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Carole Peyrin, Sylvie Chokron, Nathalie Guyader, Olivier Gout, Jacques Moret, et al.. Neural correlates of spatial frequency processing: A neuropsychological approach. Brain Research, 2006, 1073-1074, pp.1-10. ⟨10.1016/j.brainres.2005.12.051⟩. ⟨hal-00372324⟩
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