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Motor execution and motor imagery: A comparison of functional connectivity patterns based on graph theory

Authors
  • Xu, L.
  • Zhang, H.
  • Hui, M.
  • Long, Z.
  • Jin, Z.
  • Liu, Y.
  • Yao, L.1, 2, 3, 4, 5, 6, 7, 8, 2, 9, 10
  • 1 College of Information Science and Technology
  • 2 Beijing Normal University
  • 3 Paul C. Lauterbur Research Centers for Biomedical Imaging
  • 4 Shenzhen Institutes of Advanced Technology
  • 5 Chinese Academy of Sciences
  • 6 Department of Biomedical Engineering
  • 7 Peking University
  • 8 National Key Laboratory of Cognitive Neuroscience and Learning
  • 9 Laboratory of Magnetic Resonance Imaging
  • 10 The 306th Hospital of PLA
Type
Published Article
Journal
Neuroscience
Publisher
Elsevier BV
Publication Date
Jan 01, 2013
Accepted Date
Dec 03, 2013
Volume
261
Pages
184–194
Identifiers
DOI: 10.1016/j.neuroscience.2013.12.005
Source
Elsevier
Keywords
License
Unknown

Abstract

Motor execution and imagery (ME and MI), as the basic abilities of human beings, have been considered to be effective strategies in motor skill learning and motor abilities rehabilitation. Neuroimaging studies have revealed several critical regions from functional activation for ME as well as MI. Recently, investigations have probed into functional connectivity of ME; however, few explorations compared the functional connectivity between the two tasks. With betweenness centrality (BC) of graph theory, we explored and compared the functional connectivity between two finger tapping tasks of ME and MI. Our results showed that using BC, the key node for the ME task mainly focused on the supplementary motor area, while the key node for the MI task mainly located in the right premotor area. These results characterized the connectivity patterns of ME and MI and may provide new insights into the neural mechanism underlying motor execution and imagination of movements.

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