QUANTIFYING SURPRISE - VARIATION OF EVENT-RELATED POTENTIALS WITH SUBJECTIVE-PROBABILITY
QUANTIFYING SURPRISE - VARIATION OF EVENT-RELATED POTENTIALS WITH SUBJECTIVE-PROBABILITY
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DOI：
10.1111/j.1469-8986.1977.tb01312.x
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发表时间：
1977-01-01
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：
DUNCANJOHNSON, CC;DONCHIN, E
在9个先验概率水平（.10-.90）下，刺激的先验概率和紧接在前的刺激序列的相对贡献。随机序列的高（1500赫兹）和低（1000赫兹）的音调呈现给10名男子在每个概率水平，无论是当事件的任务相关，当受试者正在执行一个替代任务的音调无关。从涉及乳突的5个中线电极点记录EEG。图形 **。慢波成分与任务相关事件的先验概率成反比。在先验概率的每一个水平上，图形 **。复杂。**图形 **。慢波）在引出音重复前一个音时减弱，在前一个音出现时增强。先验概率和序列结构显然是独立的决定因素。图形 **。复杂.
The relative contribution of a priori probability of the stimuli and the sequence of immediately preceding stimuli at 9 levels of a priori probability (.10-.90). Random sequences of high (1500 Hz) and low (1000 Hz) tones were presented to 10 men at each level of probability, both when the events were task-relevant and when the subjects were performing an alternate task to which the tones were irrelevant. The EEG was recorded from 5 midline electrode sites referred to linked mastoids.The amplitude of the .**GRAPHIC**. and slow wave components was inversely proportional to the a priori probability of task-relevant events. At every level of a priori probability, the magnitude of the .**GRAPHIC**. complex .**GRAPHIC**. slow wave) was diminished when the eliciting tone repeated the preceding tone, and was enhanced when it was preceded by the other tone. A priori probability and sequential structure were apparently independent determinants of the .**GRAPHIC**. complex.