Tardiff Nathan, Kang Jiwon, Gold Joshua I
Department of Otorhinolaryngology, Perelman School of Medicine, University of Pennsylvania, United States.
Department of Psychology, New York University, United States.
bioRxiv. 2025 Feb 8:2024.05.29.596489. doi: 10.1101/2024.05.29.596489.
The brain forms certain deliberative decisions following normative principles related to how sensory observations are weighed and accumulated over time. Previously we showed that these principles can account for how people adapt their decisions to the temporal dynamics of the observations (Glaze et al., 2015). Here we show that this adaptability extends to accounting for correlations in the observations, which can have a dramatic impact on the weight of evidence provided by those observations. We tested online human participants on a novel visual-discrimination task with pairwise-correlated observations. With minimal training, the participants adapted to uncued, trial-by-trial changes in the correlations and produced decisions based on an approximately normative weighing and accumulation of evidence. The results highlight the robustness of our brain's ability to process sensory observations with respect to not just their physical features but also the weight of evidence they provide for a given decision.
大脑依据与感官观察如何随时间进行权衡和积累相关的规范原则来形成特定的审慎决策。此前我们表明，这些原则能够解释人们如何使自己的决策适应观察的时间动态（Glaze等人，2015年）。在此我们表明，这种适应性延伸至对观察中的相关性进行考量，而这可能会对那些观察所提供的证据权重产生巨大影响。我们在一项具有两两相关观察的新型视觉辨别任务中对在线人类参与者进行了测试。经过最少的训练，参与者适应了未提示的、逐次试验的相关性变化，并基于对证据的大致规范权衡和积累做出决策。这些结果凸显了我们大脑处理感官观察的能力的稳健性，这种能力不仅涉及观察的物理特征，还关乎它们为给定决策所提供的证据权重。
