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An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force

Conventional functional magnetic resonance imaging (fMRI) studies on motor feedback employ periodical blocked paradigm which does not allow frequency analysis of brain activity. Here, we carried out an fMRI study by using a continuous paradigm, that is, continuous (8 min) feedback of finger force. B...

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Detalles Bibliográficos
Autores principales: Zhang, Hang, Gao, Zhong-Zhan, Zang, Yu-Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477192/
https://www.ncbi.nlm.nih.gov/pubmed/26180789
http://dx.doi.org/10.1155/2015/273126
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author Zhang, Hang
Gao, Zhong-Zhan
Zang, Yu-Feng
author_facet Zhang, Hang
Gao, Zhong-Zhan
Zang, Yu-Feng
author_sort Zhang, Hang
collection PubMed
description Conventional functional magnetic resonance imaging (fMRI) studies on motor feedback employ periodical blocked paradigm which does not allow frequency analysis of brain activity. Here, we carried out an fMRI study by using a continuous paradigm, that is, continuous (8 min) feedback of finger force. Borrowing an analytic method widely used in resting-state fMRI studies, that is, regional homogeneity (ReHo), we compared the local synchronization in some subfrequency bands between real and sham feedback, and the subbands were defined as Slow-6 (0.0–0.01 Hz), Slow-5 (0.01–0.027 Hz), Slow-4 (0.027–0.073 Hz), Slow-3 (0.073–0.198 Hz), and Slow-2 (0.198–0.25 Hz). Our results revealed that the five subfrequency bands of brain activity contributed to the changes of ReHo between real and sham feedback differently, and, more importantly, the changes in basal ganglia were only manifested in Slow-6, implicating the fact that ReHo in ultraslow band may be associated with the functional significance of BG, that is, motor control. These findings provide novel insights into the neural substrate underlying motor feedback, and properties of the ultraslow band of local synchronization deserve more attention in future explorations.
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spelling pubmed-44771922015-07-15 An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force Zhang, Hang Gao, Zhong-Zhan Zang, Yu-Feng Biomed Res Int Research Article Conventional functional magnetic resonance imaging (fMRI) studies on motor feedback employ periodical blocked paradigm which does not allow frequency analysis of brain activity. Here, we carried out an fMRI study by using a continuous paradigm, that is, continuous (8 min) feedback of finger force. Borrowing an analytic method widely used in resting-state fMRI studies, that is, regional homogeneity (ReHo), we compared the local synchronization in some subfrequency bands between real and sham feedback, and the subbands were defined as Slow-6 (0.0–0.01 Hz), Slow-5 (0.01–0.027 Hz), Slow-4 (0.027–0.073 Hz), Slow-3 (0.073–0.198 Hz), and Slow-2 (0.198–0.25 Hz). Our results revealed that the five subfrequency bands of brain activity contributed to the changes of ReHo between real and sham feedback differently, and, more importantly, the changes in basal ganglia were only manifested in Slow-6, implicating the fact that ReHo in ultraslow band may be associated with the functional significance of BG, that is, motor control. These findings provide novel insights into the neural substrate underlying motor feedback, and properties of the ultraslow band of local synchronization deserve more attention in future explorations. Hindawi Publishing Corporation 2015 2015-06-09 /pmc/articles/PMC4477192/ /pubmed/26180789 http://dx.doi.org/10.1155/2015/273126 Text en Copyright © 2015 Hang Zhang et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Zhang, Hang
Gao, Zhong-Zhan
Zang, Yu-Feng
An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title_full An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title_fullStr An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title_full_unstemmed An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title_short An fMRI Study of Local Synchronization in Different Subfrequency Bands during the Continuous Feedback of Finger Force
title_sort fmri study of local synchronization in different subfrequency bands during the continuous feedback of finger force
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477192/
https://www.ncbi.nlm.nih.gov/pubmed/26180789
http://dx.doi.org/10.1155/2015/273126
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