A Critical Review of PET Studies of Phonological Processing
A Critical Review of PET Studies of Phonological Processing
复制标题
语音处理 PET 研究的批判性评论
作者：
D. Poeppel
使用正电子发射断层扫描来识别人体内的感觉和运动系统是非常成功的。相比之下，对认知过程的研究并不总是产生可以可靠解释的结果。对五项旨在参与语音处理的正电子发射断层扫描研究的荟荟性分析(Petersen, Fox, Posner, Mintun, & Raichle, 1989; Zatorre, Evans, Meyer, & Gjedde, 1992; Sergent, Zuck, Levesque, & MacDonald, 1992; Demonet, Chollet, Ramsay, Cardebat, Nespoulous, Wise, & Frackowiak, 1992；和Paulesu， Frith, & Frakowiak, 1993)揭示了结果并不像预期的那样收敛：设计用于分离相同语言过程的非常相似的实验显示在非重叠的皮层区域激活。虽然这些PET证实了左前庭皮层的重要性，但实验表明，左前庭皮层是不同的、不重叠的。由于结果的差异，根据正电子发射断层扫描结果将某些语言过程或相关语言表征构建的基础计算归因于特定的大脑区域还为时过早。本文认为，这种稀疏重叠的结果是由于(1)任务分解和任务控制匹配不够详细，(2)与认知心理学、心理语言学和语言学理论的接触不足，以及(3)使用减法PET方法研究语言的神经表征和加工的一些固有问题。
The use of positron emission tomography to identify sensory and motor systems in humans in vivo has been very successful. In contrast, studies of cognitive processes have not always generated results that can be reliably interpreted. A metaanalysis of five positron emission tomography studies designed to engage phonological processing (Petersen, Fox, Posner, Mintun, & Raichle, 1989; Zatorre, Evans, Meyer, & Gjedde 1992; Sergent, Zuck, Levesque, & MacDonald, 1992; Demonet, Chollet, Ramsay, Cardebat, Nespoulous, Wise, & Frackowiak, 1992; and Paulesu, Frith, & Frakowiak, 1993) reveals that the results do not converge as expected: Very similar experiments designed to isolate the same language processes show activation in nonoverlapping cortical areas. Although these PET confirm the importance of left perisylvian cortex, the experiments implicate distinct, nonoverlapping perisylvian areas. Because of the divergence of results, it is premature to attribute certain language processes or the elementary computations underlying the construction of the relevant linguistic representations to specific cerebral regions on the basis of positron emission tomographic results. It is argued that this sparse-overlap result is due (1) to insufficiently detailed task decomposition and task-control matching, (2) to insufficient contact with cognitive psychology, psycholinguistics, and linguistic theory, and (3) to some inherent problems in using substractive PET methodology to study the neural representation and processing of language.
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影响因子：
56.9
作者：
CORBETTA, M;MIEZIN, FM;PETERSEN, SE
通讯作者：
PETERSEN, SE
影响因子：
56.9
作者：
PETERSEN, SE;FOX, PT;RAICHLE, ME
通讯作者：
RAICHLE, ME
影响因子：
56.9
作者：
POSNER, MI;PETERSEN, SE;RAICHLE, ME
通讯作者：
RAICHLE, ME
影响因子：
3.7
作者：
RAICHLE, ME;FIEZ, JA;PETERSEN, SE
通讯作者：
PETERSEN, SE
处理单词和类单词符号的记忆机制。
DOI：
10.1002/9780470514184.ch12
发表时间：
1991
期刊：
Ciba Foundation symposium
影响因子：
--
作者：
Raichle,ME
通讯作者：
Raichle,ME