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• W2294865454 endingPage "e0151484" @default.
• W2294865454 startingPage "e0151484" @default.
• W2294865454 abstract "Estimating size and distance is crucial in effective visuomotor control. The concept of an internal coordinate system implies that visual and motor size parameters are scaled onto a common template. To dissociate perceptual and motor components in such scaling, we performed an fMRI experiment in which 16 right-handed subjects copied geometric figures while the result of drawing remained out of sight. Either the size of the example figure varied while maintaining a constant size of drawing (visual incongruity) or the size of the examples remained constant while subjects were instructed to make changes in size (motor incongruity). These incongruent were compared to congruent conditions. Statistical Parametric Mapping (SPM8) revealed brain activations related to size incongruity in the dorsolateral prefrontal and inferior parietal cortex, pre-SMA / anterior cingulate and anterior insula, dominant in the right hemisphere. This pattern represented simultaneous use of a ‘resized’ virtual template and actual picture information requiring spatial working memory, early-stage attention shifting and inhibitory control. Activations were strongest in motor incongruity while right pre-dorsal premotor activation specifically occurred in this condition. Visual incongruity additionally relied on a ventral visual pathway. Left ventral premotor activation occurred in all variably sized drawing while constant visuomotor size, compared to congruent size variation, uniquely activated the lateral occipital cortex additional to superior parietal regions. These results highlight size as a fundamental parameter in both general hand movement and movement guided by objects perceived in the context of surrounding 3D space." @default.
• W2294865454 created "2016-06-24" @default.
• W2294865454 creator A5016812037 @default.
• W2294865454 creator A5040105263 @default.
• W2294865454 date "2016-03-10" @default.
• W2294865454 modified "2023-10-10" @default.
• W2294865454 title "Visuomotor Dissociation in Cerebral Scaling of Size" @default.
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• W2294865454 doi "https://doi.org/10.1371/journal.pone.0151484" @default.
• W2294865454 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4786208" @default.
• W2294865454 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26963705" @default.
• W2294865454 hasPublicationYear "2016" @default.
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