珠心算训练儿童枕叶激活状态的fMRI研究  

Activation on occipital lobe in children with abacus mental calculation training:an fMRI study

作　　者：沈晓君[1] 龙金凤[1] 赵坤媛[1] 李丽新[1] 孙积宁[1] 王滨[2] 

机构地区：[1]潍坊医学院附属医院影像中心,261031 [2]滨州医学院

出　　处：《国际医学放射学杂志》2011年第2期108-112,共5页International Journal of Medical Radiology

基　　金：山东省卫生系统杰出学科带头人基金(2006-39);教育部财政部2004年招标项目

摘　　要：目的应用功能磁共振成像(fMRI)探讨接受过珠心算训练的儿童与未接受过珠心算训练儿童(对照组)在执行不同计算任务时枕叶的激活状态,从而明确枕叶在珠心算中可能的作用机制。方法分别安排接受过3年珠心算训练的儿童(16名)和未经训练的对照组儿童(16名)执行加、减、乘、除运算任务及数物对照实验,同时进行fMRI检查,应用SPM2软件对原始图像进行数据处理,对相关脑区进行定位,重点研究枕叶的激活状态。结果珠心算训练组与未训练组儿童在计算过程中枕叶的激活有所不同,训练组儿童双侧枕叶均可见激活,主要为楔叶的激活,也可见舌回的激活,未训练组儿童主要为舌回激活。两组儿童不同运算枕叶激活范围差异具有统计学意义(P<0.01)。结论枕叶在珠心算中参与了视觉空间策略的处理过程,枕叶的激活状态可能与其神经机制有关。Objective By exploring the activation on occipital lobe in children with and without abacus mental calculation training when they engaged in different calculation tasks with functional magnetic resonance imaging （fMRI）, to identify the possible mechanism of occipital lobe in abacus mental calculation. Methods fMRI was performed in children trained with and without （sixteen in each group） abacus mental calculation when they engaged in addition, subtraction, multiplication, division, and number-object control judging tasks. The data processing and statistical analysis were performed on SPM 2.0 （statistical parametric mapping 2.0） and the related-brain functional areas were identified. The activation on occipital lobe was observed carefully. The difference in actived areas of occipital lobe was statistically significant between two groups engaged in different tasks of calculations （P〈0.01）. Result Bilateral occipital lobe, especially in the cuneus and lingual gyrus, were activated in children trained with abacus mental calculation. The main activated area was lingual gyrus in children without abacus mental calculation. Conclusion The occipital lobe participates visuospatial processing in the abacus mental calculations. The neuromechanism maybe account for the specific activation in occipital lobe.

关 键 词：珠心算 儿童 功能磁共振成像 枕叶 

分 类 号：R714.1[医药卫生—妇产科学]