Modality-specific and modality-general mechanisms of perceptual decision making

感知决策可以基于来自不同感官模式的信息。然而，到目前为止，它们主要是一次研究一种模式，使用非常不同的刺激材料和任务。因此，该项目研究了哪些感知决策的神经机制是特定于个体模式的，哪些机制是在它们之间共享的。在一个新颖的、基于虚拟现实的环境中，这个项目将直接比较视觉和触觉感知决策的神经机制。为了评估神经机制，该项目将使用基于模型的fMRI和基于分层漂移扩散模型和多元选择概率方法的EEG方法。

Perceptual decisions can be based on information from different sensory modalities. So far, however, they have mostly been studied one modality at a time and using very different stimulus material and tasks. This project thus studies which neural mechanisms of perceptual decision making are specific to individual modalities and which mechanisms are shared across them. In a novel, virtual reality-based setting, this project will directly compare the neural mechanisms of both visual and tactile perceptual decisions. To assess the neural mechanisms, the project will use both model-based fMRI and EEG approaches based on hierarchical drift diffusion models and multivariate choice probability methods.