Background Tactile imagery involves the reconstruction of sensory experiences without actual tactile input. While tactile perception and imagery exhibit similar spatial patterns of neural activation, the underlying neural dynamics, particularly cortical communications within the parietal network, remain unclear.Methods The present study recruited 5 patients with implanted stereo-electroencephalography (sEEG) electrodes and recorded sEEG data during texture scanning and imagery. Local neural representations and interregional communications among parietal cortical regions were analyzed.Results Opposing modulation patterns of local time-frequency representations were observed, with inhibited neural synchronization during texture scanning and activated synchronization during texture imagery. Consistently, the directional communication from the somatosensory cortex to the posterior parietal cortex (PPC) was found to be suppressed for scanning but enhanced for imagery. Additionally, bidirectional communication between the supramarginal gyrus and precuneus was activated during imagery but not scanning, suggesting a unique pathway for reconstructing tactile experiences.Conclusion Our findings proposed that while texture perception and imagery engage overlapping cortical regions, their mechanisms underlying local encoding and interregional communication are distinct.
基金:
National Major Scientific Instruments and Equipments Development Project of National Natural Science Foundation of China [82327810, 2021ZD0201600, 2021ZD0201604]
第一作者机构:[1]Harbin Inst Technol, Sch Life Sci & Technol, Harbin, Peoples R China[2]Beijing Inst Basic Med Sci, Beijing, Peoples R China
通讯作者:
通讯机构:[1]Harbin Inst Technol, Sch Life Sci & Technol, Harbin, Peoples R China[2]Beijing Inst Basic Med Sci, Beijing, Peoples R China
推荐引用方式(GB/T 7714):
Zhang Qi,Yang Yang,Wang Zhemeng,et al.Tactile exploration and imagery elicit distinct neural dynamics in the parietal cortical network[J].FRONTIERS IN NEUROSCIENCE.2025,19:doi:10.3389/fnins.2025.1621383.
APA:
Zhang, Qi,Yang, Yang,Wang, Zhemeng,Zhou, Jiayue,Gao, Runshi...&Wang, Changyong.(2025).Tactile exploration and imagery elicit distinct neural dynamics in the parietal cortical network.FRONTIERS IN NEUROSCIENCE,19,
MLA:
Zhang, Qi,et al."Tactile exploration and imagery elicit distinct neural dynamics in the parietal cortical network".FRONTIERS IN NEUROSCIENCE 19.(2025)