Parsing the late positive complex: Mental chronometry and the ERP components that inhabit the neighborhood of the P300
Parsing the late positive complex: Mental chronometry and the ERP components that inhabit the neighborhood of the P300
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DOI：
10.1111/j.1469-8986.2004.00193.x
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发表时间：
2004-09-01
期刊：
影响因子：
3.7
通讯作者：
Donchin, E
中科院分区：
文献类型：
--
作者：
Dien, J;Spencer, KM;Donchin, E
Falkenstein，Hohnsbein，and Hoorman（1994）提出，P300潜伏期的一般测量混淆了“P-SR”成分和“P-CR”成分，前者的潜伏期对应于刺激评估时间，后者的潜伏期随反应选择时间而变化，因此对依赖P300潜伏期的心理计时学工作产生了怀疑。我们在此报告了Falkenstein等人（1994）的复制和扩展，使用11名受试者的高密度129电极导联。时空PCA被用来提取成分的ER-P。一个质心测量也被引入用于检测波形定时变化超出只是峰值潜伏期。在成分方面，我们认为P-SR和P-CR分别对应于P3 a/新奇P3和P300。从概念上讲，我们争议刺激评价和反应选择之间的区别。我们提出了一个信息加工的四阶段ERP模型，并将P3 a和P300放在这个框架中。
Falkenstein, Hohnsbein, and Hoorman (1994) suggested that common measures of P300 latency confound a "P-SR" component whose latency corresponds to stimulus evaluation time and a "P-CR" component whose latency varies with response-selection time, thus casting doubt on work in mental chronometry that relies on P300 latency. We report here a replication and extension of Falkenstein et al. (1994) using a high-density 129-electrode montage with 11 subjects. Spatiotemporal PCA was used to extract the components of the ER-P. A centroid measure is also introduced for detecting waveform-timing changes beyond just peak latency. In terms of componentry, we argue that the P-SR and the P-CR, correspond to the P3a/Novelty P3 and the P300, respectively. Conceptually, we dispute the proposed distinction between stimulus evaluation and response selection. We suggest a four-stage ERP model of information processing and place the P3a and the P300 in this framework.