CAJ | 학술논문

目的采用功能磁共振成像(fMRI)技术观察接受不同时间的珠心算训练后儿童进行计算时脑激活区的部位及特点的变化,分析珠心算训练对儿童心算能力及数字计算相关脑区的影响.方法对12名接受过珠心算训练1年(初级组)和12名接受过珠心算训练3年(高级组)的学龄儿童进行数字运算的BOLD-fMRI扫描,采用SPM2软件进行数据分析和脑功能区定位.结果高级组的运算正确率高于初级组[(66.48±13.54)%,(85.74±3.60)%,P＜0.01],反应时间短于初级组[(1056.94±485.07)ms,(591.46±287.25)ms,P＜0.01].2组被试儿童在不同的运算任务中几乎均可见枕叶及顶叶激活(P＜0.01,VOX>10).初级组儿童激活的脑区较多,主要包括双侧枕叶、额叶中上部、顶叶和颞叶,高级组儿童珠心算时激活的脑区少且集中,主要位于枕叶及顶叶.结论珠心算训练能够有效提高儿童心算能力;珠心算训练后儿童数字加工主要依赖视觉空间策略.
목적 채용공능자공진성상(fMRI)기술관찰접수불동시간적주심산훈련후인동진행계산시뇌격활구적부위급특점적변화,분석주심산훈련대인동심산능력급수자계산상관뇌구적영향.방법 대12명접수과주심산훈련1년(초급조)화12명접수과주심산훈련3년(고급조)적학령인동진행수자운산적BOLD-fMRI소묘,채용SPM2연건진행수거분석화뇌공능구정위.결과 고급조적운산정학솔고우초급조[(66.48±13.54)%,(85.74±3.60)%,P＜0.01],반응시간단우초급조[(1056.94±485.07)ms,(591.46±287.25)ms,P＜0.01].2조피시인동재불동적운산임무중궤호균가견침협급정협격활(P＜0.01,VOX>10).초급조인동격활적뇌구교다,주요포괄쌍측침협、액협중상부、정협화섭협,고급조인동주심산시격활적뇌구소차집중,주요위우침협급정협.결론 주심산훈련능구유효제고인동심산능력;주심산훈련후인동수자가공주요의뢰시각공간책략.
ObjectiveTo localize the activated functional areas in children drilled in mental abacus calculation when they calculates with fMRI. To investigate the ability of mental calculation of children and the influence on these activated brain areas related to digit calculation after different time of training with mental abacus calculation.MethodsThere were 24 school children divided into 2 groups according to the training time of mental abacus calculation. The children in primary group were trained for 1 year and those in senior group were trained for 3 years. Blood oxygenation level dependence (BOLD) functional magnetic resonance imaging (fMRI) scan was performed when they calculated. All data were analyzed by statistical parametric mapping 2 (SPM2) to get the results of activated areas between the two groups. ResultsThe performance of the senior group with better correctness[(66.48±13.54)%,(85.74±3.60)%,P＜0.01] and shorter reaction time was much better than that of the primary group[(1056.94±485.07)ms,(591.46±287.25)ms,P＜0.01]. Occipital lobe and parietal lobe were activated in both groups during addition and subtraction tasks(P＜0.01, VOX>10). There were more brain areas activated in the primary group during the mental abacus calculation, such as bilateral occipital lobe, superior and middle frontal area, parietal lobe and temporal lobe. The brain areas activated in the senior group were fewer and mainly localized in occipital lobe and parietal lobe. ConclusionTraining of mental abacus calculation can enhance the ability of mental calculation of children. More areas related to visuospatial are activated after training, which indicates that children who accept mental abacus calculation training mainly rely on the visuospatial representations during number processing in mental calculation.