Selective Attention Dynamically Modulates the Hierarchical Order of Perceptual and Conceptual Representations.

ABSTRACT: Mounting evidence suggests that information processing in the visual hierarchy involves a progression from low-level perceptual to high-level conceptual features during visual perception, and a reverse traversal during memory retrieval. However, the nature of this processing hierarchy and its modulation by selective attention remain unclear. By using the drift-diffusion model, we found that slower reaction times for conceptual versus perceptual tasks were primarily due to differences in decision boundaries and nondecision times, which were not compensated by faster evidence accumulation for conceptual features. Using single-trial multivariate decoding of magnetoencephalography (MEG) data, we tracked the temporal dynamics of feature representation during visual perceptual and mnemonic tasks

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC12449827 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature