| Functional brain laterality for sequential movements： Impact of transient practice |
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| 引用本文： | ZHUYihong DONGZongwang WENGXuchu CHENYizhang. Functional brain laterality for sequential movements： Impact of transient practice[J]. 科学通报(英文版), 2005, 50(3): 235-239. DOI: 10.1007/BF02897533 |
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| 作者姓名： | ZHUYihong DONGZongwang WENGXuchu CHENYizhang |
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| 作者单位： | [1]MedicalSchool,ZhejiangUniversity,Hangzhou310006,China [2]DepartmentofPsychology,SchoolofEducation,HebelNormalUniversity,Shijiazhuang050091,China／／LaboratoryforHigherBrainFunction,InstituteofPsychology,ChineseAcademyofSciences,Beijing100101,China [3]MedicalSchool,ZhejiangUniversity,Hangzhou310006,China／／LaboratoryforHigherBrainFunction,InstituteofPsychology,ChineseAcademyofSciences,Beijing100101,China [4]MedicalSchool,ZhejiangUniversity,Hangzhou310006China／／InstituteotNeuroscience,SecondMilitaryMedicalUniversity,Shanghai200433,China |
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| 摘 要： | The impact of learning on brain functional laterality has not been systematically investigated. We employed an event-related functional magnetic resonance imaging combined with a delayed sequential movement task to investigate brain activation pattern and laterality during a transient practice in 12 subjects. Both hemispheres, involving motor areas and posterior parietal cortex, were engaged during motor preparation and execution, with larger activation volume in the left hemisphere than in the right. Activation volume in these regions significantly decreased after a transient practice, with more reduction in the right hemisphere resulting increase in left lateralization. The theoretical implications of these findings are discussed in relation to the physiological significance of brain functional laterality.
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| 关 键 词： | 脑 连续运动系统 功能磁性图象 生理学 数据分析系统 |
| 收稿时间： | 2004-09-15 |
Functional brain laterality for sequential movements: Impact of transient practice |
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| Yihong Zhu,Zongwang Dong,Xuchu Weng,Yizhang Chen. Functional brain laterality for sequential movements: Impact of transient practice[J]. Chinese science bulletin, 2005, 50(3): 235-239. DOI: 10.1007/BF02897533 |
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| Authors: | Yihong Zhu Zongwang Dong Xuchu Weng Yizhang Chen |
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| Affiliation: | (1) Medical School, Zhejiang University, 310006 Hangzhou, China;(2) Department of Psychology, School of Education, Hebei Normal University, 050091 Shijiazhuang, China;(3) Laboratory for Higher Brain Function, Institute of Psychology, Chinese Academy of Sciences, 100101 Beijing, China;(4) Institute of Neuroscience, Second Military Medical University, 200433 Shanghai, China |
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| Abstract: | The impact of learning on brain functional laterality has not been systematically investigated. We em- ployed an event-related functional magnetic resonance im- aging combined with a delayed sequential movement task to investigate brain activation pattern and laterality during a transient practice in 12 subjects. Both hemispheres, involving motor areas and posterior parietal cortex, were engaged during motor preparation and execution, with larger activa- tion volume in the left hemisphere than in the right. Activa- tion volume in these regions significantly decreased after a transient practice, with more reduction in the right hemi- sphere resulting increase in left lateralization. The theoretical implications of these findings are discussed in relation to the physiological significance of brain functional laterality. |
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| Keywords: | brain laterality learning sequential movement func- tional magnetic resonance imaging (fMRI). |
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