Journal
JOURNAL OF PAIN RESEARCH
Volume 11, Issue -, Pages 843-850Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/JPR.S156634
Keywords
acute eye pain; corneal pain; regional homogeneity; resting state; functional magnetic resonance imaging
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Funding
- National Natural Science Foundation of China [81660158, 81460092, 81400372, 81400424]
- Natural Science Key Project of Jiangxi Province [20161ACB21017]
- Youth Science Foundation of Jiangxi Province [20151BAB215016]
- Key Research Development Foundation of Jiangxi Province [20151BBG70223]
- Key Education Department Foundation of Jiangxi Province [GJJ160020]
- Education Department Foundation of Jiangxi Province [GJJ160122]
- Health Development Planning Commission Science Foundation of Jiangxi Province [20164017, 20175115, 20175116]
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Objective: Previous neuroimaging studies have demonstrated that pain-related diseases are associated with brain function and anatomical abnormalities, whereas altered synchronous neural activity in acute eye pain (EP) patients has not been investigated. The purpose of this study was to explore whether or not synchronous neural activity changes were measured with the regional homogeneity (ReHo) method in acute EP patients. Methods: A total of 20 patients (15 males and 5 females) with EP and 20 healthy controls (HCs) consisting of 15 and 5 age-, sex-, and education-matched males and females, respectively, underwent resting-state functional magnetic resonance imaging. The ReHo method was applied to assess synchronous neural activity changes. Results: Compared with HCs, acute EP patients had significantly lower ReHo values in the left precentral/postcentral gyrus (Brodmann area [BA]3/4), right precentral/postcentral gyrus (BA3/4), and left middle frontal gyrus (BA6). In contrast, higher ReHo values in acute EP patients were observed in the left superior frontal gyrus (BA11), right inferior parietal lobule (BA39/40), and left precuneus (BA7). However, no relationship was found between the mean ReHo signal values of the different areas and clinical manifestations, which included both the duration and degree of pain in EP patients. Conclusion: Our study highlighted that acute EP patients showed altered synchronous neural activities in many brain regions, including somatosensory regions. These findings might
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