Decision-making on the basis of multiple information sources is common. However, to what extent such decisions differ from those with a single source remains unclear. We combined cognitive modelling and neural-mass modelling to characterise the neurocognitive process underlying perceptual decision-making with single or double information sources. Ninety-four human participants performed binary decisions to discriminate the coherent motion direction averaged across two independent apertures. Regardless of the angular distance of the apertures, separating motion information into two apertures resulted in a reduction in accuracy. Our cognitive and neural-mass modelling results are consistent with the hypotheses that the addition of the second information source led to a lower signal-to-noise ratio of evidence accumulation with two congruent information sources, and a change in the decision strategy of speed-accuracy trade-off with two incongruent sources. Thus, our findings support a robust behavioural change in relation to multiple information sources, which have congruency-dependent impacts on selective decision-making subcomponents.

中文翻译：

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不完美的整合：多个感官来源之间的一致性调节决策过程。

基于多个信息源的决策很常见。然而，这些决定与单一来源的决定在多大程度上不同仍不清楚。我们将认知建模和神经质量建模相结合，以表征具有单一或双重信息源的知觉决策的神经认知过程。九十四名人类参与者执行二元决策以区分跨两个独立孔径平均的相干运动方向。不管孔的角距离如何，将运动信息分成两个孔会导致精度降低。我们的认知和神经质量建模结果与以下假设一致，即添加第二个信息源导致两个全等信息源的证据积累的信噪比较低，以及速度决策策略的变化-与两个不一致的来源的准确性权衡。因此，我们的研究结果支持与多个信息源相关的稳健的行为变化，这些信息源对选择性决策子组件具有一致性依赖性影响。