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Distinct cortical networks support the planning and online control of reaching‐to‐grasp in humans
Author(s) -
Glover Scott,
Wall Matthew B.,
Smith Andrew T.
Publication year - 2012
Publication title -
european journal of neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.346
H-Index - 206
eISSN - 1460-9568
pISSN - 0953-816X
DOI - 10.1111/j.1460-9568.2012.08018.x
Subject(s) - intraparietal sulcus , supramarginal gyrus , premotor cortex , superior parietal lobule , neuroscience , posterior parietal cortex , grasp , psychology , inferior parietal lobule , functional magnetic resonance imaging , cortex (anatomy) , parietal lobe , human brain , task positive network , default mode network , computer science , anatomy , biology , dorsum , programming language
A number of brain imaging studies have identified regions involved in the planning and control of complex actions. Here we attempt to contrast activity related to planning and online control in the human brain during simple reaching and grasping movements. In four conditions, participants did one of the following: passively observed a grasp target; planned a grasping movement without executing; planned and then executed a grasp; or immediately executed a grasp. Neural activity was measured using functional magnetic resonance imaging and activity in the various conditions compared. Two large, independent networks of brain activity were identified: (i) a planning network including the premotor cortex, basal ganglia, anterior cingulate, posterior medial parietal area, superior parietal occipital cortex and middle intraparietal sulcus; and (ii) a control network including sensorimotor cortex, the cerebellum, the supramarginal gyrus and the superior parietal lobule. These findings provide evidence that the planning and control of even simple reaching and grasping actions use different brain regions, including different parts of the frontal and parietal lobes.