ID | 61395 |
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Author |
Yang, Jiajia
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
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Yu, Yinghua
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
ORCID
Shigemasu, Hiroaki
Kochi University of Technology
Kadota, Hiroshi
Kochi University of Technology
Nakahara, Kiyoshi
Kochi University of Technology
Kochiyama, Takanori
ATR Brain Activity Imaging Center
Ejima, Yoshimichi
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Kaken ID
Wu, Jinglong
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
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Abstract | Background
Vision and touch are thought to contribute information to object perception in an independent but complementary manner. The left lateral posterior parietal cortex (LPPC) has long been associated with multisensory information processing, and it plays an important role in visual and haptic crossmodal information retrieval. However, it remains unclear how LPPC subregions are involved in visuo‐haptic crossmodal retrieval processing.
Methods
In the present study, we used an fMRI experiment with a crossmodal delayed match‐to‐sample paradigm to reveal the functional role of LPPC subregions related to unimodal and crossmodal dot‐surface retrieval.
Results
The visual‐to‐haptic condition enhanced the activity of the left inferior parietal lobule relative to the haptic unimodal condition, whereas the inverse condition enhanced the activity of the left superior parietal lobule. By contrast, activation of the left intraparietal sulcus did not differ significantly between the crossmodal and unimodal conditions. Seed‐based resting connectivity analysis revealed that these three left LPPC subregions engaged distinct networks, confirming their different functions in crossmodal retrieval processing.
Conclusion
Taken together, the findings suggest that functional heterogeneity of the left LPPC during visuo‐haptic crossmodal dot‐surface retrieval processing reflects that the left LPPC does not simply contribute to retrieval of past information; rather, each subregion has a specific functional role in resolving different task requirements.
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Keywords | crossmodal processing
fMRI
haptic dot-surface matching
lateral posterior parietal cortex
memory retrieval
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Published Date | 2021-01-19
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Publication Title |
Brain and Behavior
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Volume | volume11
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Issue | issue3
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Publisher | Wiley
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Start Page | e02033
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ISSN | 2162-3279
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2021 The Authors.
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File Version | publisher
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Related Url | isVersionOf https://doi.org/10.1002/brb3.2033
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License | https://creativecommons.org/licenses/by/4.0/
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Funder Name |
Japan Society for the Promotion of Science
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助成番号 | JP18K15339
JP18H01411
JP18K18835
JP20K07722
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