Involvement of secondary motor areas in externally-triggered single-finger movements of dominant and a non-dominant hands
Gu, Y; Zang, WF; Weng, XC; Jia, FC; Li, EZ; Wang, JJ; WENG Xuchu
2003-08-01
发表期刊CHINESE SCIENCE BULLETIN
ISSN1001-6538
文章类型Article
卷号48期号:15页码:1569-1575
摘要Whether the secondary motor areas are involved in simple voluntary movements remains controversial. Differences in the neural substrates of movements with the dominant and the non-dominant hands have not been well documented. In the present study, functional magnetic resonance imaging (fMRI) was used to investigate the hemodynamic response in the primary motor cortex (M1), supplementary motor area (SMA) and premotor cortex (PMC) in six healthy right-handed subjects while performing a visually-guided ringer-tapping task with their dominant or non-dominant hands. Significant activation was observed in M1, SMA and PMC during this externally triggered simple voluntary movement task. While dominant hand movements only activated contralateral motor areas, non-dominant hand movements also activated ipsilateral SMA and PMC. The results provide strong evidence for the involvement of the secondary motor areas in simple voluntary movements, and also suggest that movements of the dominant hand primarily engage the contralateral secondary motor areas, whereas movements of the non-dominant hand engage bilateral secondary motor areas.; Whether the secondary motor areas are involved in simple voluntary movements remains controversial. Differences in the neural substrates of movements with the dominant and the non-dominant hands have not been well documented. In the present study, functional magnetic resonance imaging (fMRI) was used to investigate the hemodynamic response in the primary motor cortex (M1), supplementary motor area (SMA) and premotor cortex (PMC) in six healthy right-handed subjects while performing a visually-guided ringer-tapping task with their dominant or non-dominant hands. Significant activation was observed in M1, SMA and PMC during this externally triggered simple voluntary movement task. While dominant hand movements only activated contralateral motor areas, non-dominant hand movements also activated ipsilateral SMA and PMC. The results provide strong evidence for the involvement of the secondary motor areas in simple voluntary movements, and also suggest that movements of the dominant hand primarily engage the contralateral secondary motor areas, whereas movements of the non-dominant hand engage bilateral secondary motor areas.
关键词functional magnetic resonance imaging (fMRI) primary motor cortex (M1) secondary motor areas supplementary motor area (SMA) premotor cortex (PMC) simple voluntary movement dominant hand
学科领域生理心理学/生物心理学
收录类别SCI
语种英语
WOS记录号WOS:000184925400013
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/5499
专题中国科学院心理研究所回溯数据库(1956-2010)
通讯作者WENG Xuchu
作者单位1.Chinese Acad Sci, Inst Psychol, Lab Higher Brain Funct, Beijing 100101, Peoples R China
2.Nanjing Univ, Dept Biol Sci & Technol, Nanjing 210093, Peoples R China
3.Shougang Gen Hosp, Dept MRI, Beijing 100041, Peoples R China
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Gu, Y,Zang, WF,Weng, XC,et al. Involvement of secondary motor areas in externally-triggered single-finger movements of dominant and a non-dominant hands[J]. CHINESE SCIENCE BULLETIN,2003,48(15):1569-1575.
APA Gu, Y.,Zang, WF.,Weng, XC.,Jia, FC.,Li, EZ.,...&WENG Xuchu.(2003).Involvement of secondary motor areas in externally-triggered single-finger movements of dominant and a non-dominant hands.CHINESE SCIENCE BULLETIN,48(15),1569-1575.
MLA Gu, Y,et al."Involvement of secondary motor areas in externally-triggered single-finger movements of dominant and a non-dominant hands".CHINESE SCIENCE BULLETIN 48.15(2003):1569-1575.
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