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Wang, Chenyu Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Yu, Yinghua Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University
Yang, Jiajia Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University ORCID Kaken ID publons researchmap
Abstract
Background: Transferring learned manipulations to new manipulation tasks has enabled humans to realize thousands of dexterous object manipulations in daily life. Two-digit grasp and three-digit grasp manipulations require different fingertip forces, and our brain can switch grasp types to ensure good performance according to motor memory. We hypothesized that several brain areas contribute to the execution of the new type of motor according to the motor memory. However, the motor memory mechanisms during this transfer period are still unclear. In the present functional magnetic resonance imaging (fMRI) study, we aimed to investigate the cortical mechanisms involved in motor memory during the transfer phase of learned manipulation tasks. Methods: Using a custom-built T-shaped object with an adjustable weight distribution, the participants performed grasp and lift manipulation tasks under different conditions to simulate the learning and transfer phases. The learning phase consisted of four grasp-and-lift repetitions with one motor type, followed by a transfer phase with four repetitions involving different motors (adding or removing a digit). Results: By comparing brain activity in the learning and transfer phases, we identified three regions (the superior frontal gyrus, supramarginal gyrus, and postcentral gyrus) associated with motor memory during the transfer of learned manipulations. Conclusions: Our findings improve the understanding of the role of the posterior parietal cortex in motor memory, highlighting how sensory information from memory and real-time input is integrated to generate novel motor control signals that guide the precise reapplication of control strategies. Furthermore, we believe that these areas contribute to motor learning from motor memory and may serve as key regions of interest for investigating neurodegenerative diseases.
Keywords
fMRI
motor learning and transfer
primary sensorimotor cortex
posterior parietal cortex
Published Date
2024-11-26
Publication Title
Brain Sciences
Volume
volume14
Issue
issue12
Publisher
MDPI
Start Page
1184
ISSN
2076-3425
Content Type
Journal Article
language
English
OAI-PMH Set
岡山大学
Copyright Holders
© 2024 by the authors.
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DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.3390/brainsci14121184
License
https://creativecommons.org/licenses/by/4.0/
Citation
Wang, C.; Yu, Y.; Yang, J. Contributions of the Primary Sensorimotor Cortex and Posterior Parietal Cortex to Motor Learning and Transfer. Brain Sci. 2024, 14, 1184. https://doi.org/10.3390/brainsci14121184
Funder Name
Japan Science and Technology Agency
Japan Society for the Promotion of Science
助成番号
JPMJFR2041
JP22K07327