Patterns of regional cerebral blood flow related to memorizing of high and low imagery words—An emission computer tomography study
Patterns of regional cerebral blood flow related to memorizing of high and low imagery words—An emission computer tomography study
复制标题
与高低意象单词记忆相关的局部脑血流模式——发射计算机断层扫描研究
DOI：
10.1016/0028-3932(87)90072-8
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发表时间：
1987
期刊：
影响因子：
2.6
通讯作者：
K. Willmes
中科院分区：
文献类型：
--
作者：
G. Goldenberg;I. Podreka;M. Steiner;K. Willmes
研究人员对健康志愿者的局部脑血流模式进行了研究，这些志愿者要么在休息，要么在记忆无意义的单词、抽象名词或具体名词，后者有或没有使用视觉图像的指导。对相对区域计数率进行最小空间分析（SAA）以研究协变的结构。具体名词的记忆导致了由下颞叶和枕叶区域组成的连续相关子空间的形成。当在没有图像指导的情况下记忆具体名词时，右侧半球的平均计数率较高，而有意使用图像则导致左侧占优势。然而，相关结构的分析表明，在这两种情况下，左半球主要参与任务解决，并且半球不对称的差异归因于不同的半球间协作模式。
Patterns of regional cerebral blood flow were investigated in healthy volunteers who were either resting or memorizing meaningless words, abstract nouns, or concrete nouns, the latter being given either with or without an instruction to use visual imagery. Relative regional count rates were subjected to smallest space analysis (SAA) to study the structure of covariations. Memorizing of concrete nouns gave rise to the formation of a continuous correlational subspace which comprised inferior temporal and occipital regions. When concrete nouns were memorized without an imagery instruction the mean hemispheric count rate was higher on the right side, whereas the intentional use of imagery gave rise to a left preponderance. Analysis of correlational structures, however, suggests that in both cases the left hemisphere was predominantly engaged in task solution, and that the difference in hemispheric asymmetries is to be attributed to different modes of interhemispheric collaboration.