Temporally Unconstrained Decoding Reveals Consistent but Time-Varying Stages of Stimulus Processing.

ABSTRACT: In this article, we propose a method to track trial-specific neural dynamics of stimulus processing and decision making with high temporal precision. By applying this novel method to a perceptual template-matching task, we tracked representational brain states associated with the cascade of neural processing, from early sensory areas to higher order areas that are involved in integration and decision making. We address a major limitation of the traditional decoding approach: that it relies on consistent timing of these processes over trials. Using a TUDA approach, we found that the timing of the cognitive processes involved in perceptual judgments can vary considerably over trials. This revealed that the sequence of processing states was consistent for all subjects and trials, even when th

SUBMITTER: Vidaurre D 

PROVIDER: S-EPMC6319313 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature