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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 374 - 383 (10page)
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초록· 키워드
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Objective To investigate the global functional reorganization of the brain following spinal cord injury with graph theory based approach by creating whole brain functional connectivity networks from resting state-functional magnetic resonance imaging (rs-fMRI), characterizing the reorganization of these networks using graph theoretical metrics and to compare these metrics between patients with spinal cord injury (SCI) and age-matched controls.Methods Twenty patients with incomplete cervical SCI (14 males, 6 females; age, 55±14.1 years) and 20 healthy subjects (10 males, 10 females; age, 52.9±13.6 years) participated in this study. To analyze the characteristics of the whole brain network constructed with functional connectivity using rs-fMRI, graph theoretical measures were calculated including clustering coefficient, characteristic path length, global efficiency and small-worldness. Results Clustering coefficient, global efficiency and small-worldness did not show any difference between controls and SCIs in all density ranges. The normalized characteristic path length to random network was higher in SCI patients than in controls and reached statistical significance at 12%–13% of density (p<0.05, uncorrected).Conclusion The graph theoretical approach in brain functional connectivity might be helpful to reveal the information processing after SCI. These findings imply that patients with SCI can build on preserved competent brain control. Further analyses, such as topological rearrangement and hub region identification, will be needed for better understanding of neuroplasticity in patients with SCI.
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참고문헌 (40)
참고문헌 신청
Shoham S / 2001 / Motor-cortical activity in tetraplegics / Nature 413:793
Turner JA / 2003 / An fMRI investigation of hand representation in paraplegic humans / Neurorehabil Neural Repair 17:37~47
Jurkiewicz MT / 2010 / Sensorimotor cortical activation in patients with cer vical spinal cord injury with persisting paralysis / Neurorehabil Neural Repair 24:136~140
Cordes D / 2002 / Hierarchical clustering to measure connectivity in fMRI resting-state data / Magn Reson Imaging 20:305~317
Lowe MJ / 1998 / Functional connectivity in single and multislice echoplanar imaging using resting-state fluctuations / Neuroimage 7:119~132
Turner JA / 2003 / An fMRI investigation of hand representation in paraplegic humans / Neurorehabil Neural Repair 17:37~47
Jurkiewicz MT / 2010 / Sensorimotor cortical activation in patients with cer vical spinal cord injury with persisting paralysis / Neurorehabil Neural Repair 24:136~140
Cordes D / 2002 / Hierarchical clustering to measure connectivity in fMRI resting-state data / Magn Reson Imaging 20:305~317
Lowe MJ / 1998 / Functional connectivity in single and multislice echoplanar imaging using resting-state fluctuations / Neuroimage 7:119~132
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