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Fractional amplitude of low-frequency fluctuation changes in monkeys with spinal cord injury: a resting-state fMRI study.

Abstract：

PURPOSE:Although functional magnetic resonance imaging (fMRI) has revealed that spinal cord injury (SCI) causes anomalous changes in task-induced brain activation, its effect during the resting state remains unclear. The aim of this study is to explore the changes of the brain resting-state function in non-human primates with unilateral SCI. MATERIALS AND METHODS:Eleven adult female rhesus monkeys were subjected to resting-state fMRI: five with unilateral thoracic SCI and six healthy monkeys, to obtain the fractional amplitude of low-frequency fluctuations (fALFF) of the blood oxygenation level-dependent (BOLD) contrast signal to determine the influence of SCI on the cerebral resting-state function. RESULTS:The SCI-induced fALFF vary significantly in several encephalic regions, including the left cerebellum, the left thalamus, the right lateral geniculate nucleus, the right superior parietal lobule, and the posterior cingulate gyrus. CONCLUSION:Analysis of the resting-state fMRI provides evidence of abnormal spontaneous brain activations in primates with SCI, which may help us understand the pathophysiologic mechanisms underlying the changes in neural plasticity in the central nervous system after SCI.

journal_name

Magn Reson Imaging

journal_title

Magnetic resonance imaging

authors

Rao JS,Ma M,Zhao C,Zhang AF,Yang ZY,Liu Z,Li XG

doi

10.1016/j.mri.2014.02.001

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

482-6

issue

5

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(14)00044-7

journal_volume

32

pub_type

杂志文章

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