The organization of brain activations in number comparison: Event-related potentials and the additive-factors method
The organization of brain activations in number comparison: Event-related potentials and the additive-factors method
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DOI：
10.1162/jocn.1996.8.1.47
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发表时间：
1996-01-01
影响因子：
3.2
通讯作者：
Dehaene, S
中科院分区：
文献类型：
--
作者：
Dehaene, S
使用加性因子法测量反应时间（RT）提供了有关认知任务中处理阶段顺序的信息。在这里，我描述了如何在同一任务中的事件相关电位（ERP）的同时记录可以提供补充信息，不能单独使用RT获得。最值得注意的是，ERP数据可以揭示绝对激活时间和加工阶段的粗略大脑定位。RT和ERP也可用于交叉验证串行阶段模型。这些概念被应用到一项研究的时间展开的大脑激活的数字比较任务。在正常受试者将数字分为大于或小于5的情况下，从64个头皮电极记录ERPs。特定的头皮签名和定时数据获得的阶段的字和数字识别，幅度比较，响应编程，错误捕获和纠正。所观察到的本地化与以前的神经心理学和脑成像数据是兼容的，并提供了新的见解大脑的偏侧化和时间的数字处理。
Measuring reaction times (RTs) using the additive-factors method provides information about the sequence of processing stages in a cognitive task. Here, I describe how the simultaneous recording of event-related potentials (ERPs) in the same task can provide complementary information that cannot be obtained using RTs alone. Most notably, ERP data can reveal the absolute activation time and the coarse brain localization of processing stages. RTs and ERPs can also be used to cross-validate a serial-stage model. These notions were applied to a study of the temporal unfolding of brain activations in a number comparison task. ERPs were recorded from 64 scalp electrodes while normal subjects classified numbers as larger or smaller than 5. Specific scalp signatures and timing data were obtained for stages of word and digit identification, magnitude comparison, response programming, and error capture and correction. The observed localizations were compatible with previous neuropsychological and brain imaging data and provided new insights into the cerebral lateralization and timing of number processing.