FOR DISTINGUISHED EARLY CAREER CONTRIBUTION TO PSYCHOPHYSIOLOGY - AWARD ADDRESS, 1985 - A TRIARCHIC MODEL OF P300 AMPLITUDE
FOR DISTINGUISHED EARLY CAREER CONTRIBUTION TO PSYCHOPHYSIOLOGY - AWARD ADDRESS, 1985 - A TRIARCHIC MODEL OF P300 AMPLITUDE
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DOI：
10.1111/j.1469-8986.1986.tb00649.x
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发表时间：
1986-07-01
期刊：
影响因子：
3.7
通讯作者：
JOHNSON, R
中科院分区：
文献类型：
--
作者：
JOHNSON, R
P300振幅的模型，提出了减少许多假设的结构调用解释P300振幅的变化到三个维度：1）主观概率，2）刺激意义，和3）信息传输。证据支持的断言，变量的主观概率和刺激的意义尺寸有独立的和附加的贡献，整体P300幅度。然而，这两个维度的幅度贡献通过与所传输的刺激信息的比例的乘法关系来调制。在每个维度内，指定基本实验变量及其相互关系。通过一个例子，说明了如何使用附加因子的方法，概率和刺激意义维度的各自的幅度效应可以被分离。支持数据表明，该模型提供了一个合理的和可测试的框架中概念化P300的结果。
A model of P300 amplitude is proposed that reduces the many hypothetical constructs invoked to explain variations in P300 amplitude to three dimensions: 1) Subjective Probability, 2) Stimulus Meaning, and 3) Information Transmission. Evidence is presented to support the assertion that variables on the subjective probability and stimulus meaning dimensions have independent and additive contributions to overall P300 amplitude. The amplitude contributions of both of these dimensions, however, are modulated by a multiplication relation with the proportion of transmitted stimulus information. Within each dimension, the fundamental experimental variables and their interrelations are specified. An example is presented to show how, by using an additive factors method, the respective amplitude effects of the probability and stimulus meaning dimensions can be separated. Supporting data are presented to show that the proposed model provides a reasonable and testable framework in which to conceptualize P300 results.