Selective attention dynamically modulates the hierarchical order of perceptual and conceptual representations
Zhou, Yu (Beijing Normal University)
Zhang, Liang (Beijing Normal University)
Axmacher, Nikolai (Beijing Normal University)
Pacheco Estefan, Daniel (Ruhr-Universität Bochum. Abteilung für Neuropsychologie)
Wang, DaHui (Beijing Normal University)
Dai, Yujian (Beijing Normal University)
Peng, Xiaojing (Beijing Normal University)
Liu, Shixiang (Beijing Union University)
Xue, Gui (Beijing Normal University)

Publicació:	Wiley-Liss Inc., 2025
Descripció:	19 pàg.
Resum:	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. During perception, selective attention reversed the onset times of perceptual and conceptual features in occipital and parietal lobes, enabling earlier detection of conceptual features. Stronger theta oscillation interactions between occipital and temporal regions during task preparation correlated with earlier onset times of target features in the occipital lobe. During retrieval, selective attention led to earlier peak times for perceptual compared to conceptual features in the frontal lobe. These findings provide novel insights into the dynamic nature of hierarchical processing during perception and memory retrieval, highlighting the critical role of selective attention in modulating information accumulation speed.
Nota:	Altres ajuts: This work was supported by the Fundamental Research Funds for the Central Universities (2243300006) and the National Natural Science Foundation of China (32330039).
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Feature representation ; Magnetoencephalography ; Memory retrieval ; Selective attention ; Visual perception
Publicat a:	Human brain mapping, Vol. 46 (2025) , p. e70359, ISSN 1097-0193

DOI: 10.1101/2024.01.21.576506

19 p, 2.1 MB

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