Raichle M E
Mallinckrodt Institute of Radiology, Department of Neurology and Neurosurgery, Washington University School of Medicine, St Louis, MO 63110.
Ciba Found Symp. 1991;163:198-204; discussion 204-17. doi: 10.1002/9780470514184.ch12.
Modern functional imaging techniques such as positron emission tomography (PET) provide the opportunity to examine in some detail the implementation of mental activities in the human brain. Using measurements of changes in local brain blood flow obtained with PET as a marker of changes in local neuronal activity we have examined the processing of single words and word-like symbols. These studies reveal the very distributed, modular nature of this implementation and provide some preliminary insights into the role of memory mechanisms in the process.
现代功能成像技术，如正电子发射断层扫描（PET），提供了详细研究人类大脑中精神活动实施情况的机会。利用PET获得的局部脑血流变化测量值作为局部神经元活动变化的标志，我们研究了单个单词和类单词符号的处理过程。这些研究揭示了这种实施方式非常分散、模块化的性质，并对记忆机制在该过程中的作用提供了一些初步见解。
