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• W2093600078 abstract "Visuomotor transformations for grasping have been associated with a fronto-parietal network in the monkey brain. The human homologue of the parietal monkey region (AIP) has been identified as the anterior part of the intraparietal sulcus (aIPS), whereas the putative human equivalent of the monkey frontal region (F5) is located in the ventral part of the premotor cortex (vPMC). Results from animal studies suggest that monkey F5 is involved in the selection of appropriate hand postures relative to the constraints of the task. In humans, the functional roles of aIPS and vPMC appear to be more complex and the relative contribution of each region to grasp selection remains uncertain. The present study aimed to identify modulation in brain areas sensitive to the difficulty level of tool object - hand posture matching. Seventeen healthy right handed participants underwent fMRI while observing pictures of familiar tool objects followed by pictures of hand postures. The task was to decide whether the hand posture matched the functional use of the previously shown object. Conditions were manipulated for level of difficulty. Compared to a picture matching control task, the tool object – hand posture matching conditions conjointly showed increased modulation in several left hemispheric regions of the superior and inferior parietal lobules (including aIPS), the middle occipital gyrus, and the inferior temporal gyrus. Comparison of hard versus easy conditions selectively modulated the left inferior frontal gyrus with peak activity located in its opercular part (Brodmann area (BA) 44). We suggest that in the human brain, vPMC/BA44 is involved in the matching of hand posture configurations in accordance with visual and functional demands." @default.
• W2093600078 created "2016-06-24" @default.
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• W2093600078 creator A5049553184 @default.
• W2093600078 date "2013-07-30" @default.
• W2093600078 modified "2023-10-06" @default.
• W2093600078 title "Human Left Ventral Premotor Cortex Mediates Matching of Hand Posture to Object Use" @default.
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• W2093600078 doi "https://doi.org/10.1371/journal.pone.0070480" @default.
• W2093600078 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3728237" @default.
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• W2093600078 hasPublicationYear "2013" @default.
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