Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task
The scale-free dynamics of human brain activity, characterized by an elaborate temporal structure with scale-free properties, can be quantified using the power-law exponent (PLE) as an index. Power laws are well documented in nature in general, particularly in the brain. Some previous fMRI studies h...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Behavioural Neurology |
| Online Access: | http://dx.doi.org/10.1155/2017/2824615 |
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| author | Masato Kasagi Zirui Huang Kosuke Narita Hitoshi Shitara Tomokazu Motegi Yusuke Suzuki Kazuyuki Fujihara Sean Tanabe Hirotaka Kosaka Koichi Ujita Masato Fukuda Georg Northoff |
| author_facet | Masato Kasagi Zirui Huang Kosuke Narita Hitoshi Shitara Tomokazu Motegi Yusuke Suzuki Kazuyuki Fujihara Sean Tanabe Hirotaka Kosaka Koichi Ujita Masato Fukuda Georg Northoff |
| author_sort | Masato Kasagi |
| collection | DOAJ |
| description | The scale-free dynamics of human brain activity, characterized by an elaborate temporal structure with scale-free properties, can be quantified using the power-law exponent (PLE) as an index. Power laws are well documented in nature in general, particularly in the brain. Some previous fMRI studies have demonstrated a lower PLE during cognitive-task-evoked activity than during resting state activity. However, PLE modulation during cognitive-task-evoked activity and its relationship with an associated behavior remain unclear. In this functional fMRI study in the resting state and face processing + control task, we investigated PLE during both the resting state and task-evoked activities, as well as its relationship with behavior measured using mean reaction time (mRT) during the task. We found that (1) face discrimination-induced BOLD signal changes in the medial prefrontal cortex (mPFC), posterior cingulate cortex (PCC), amygdala, and fusiform face area; (2) PLE significantly decreased during task-evoked activity specifically in mPFC compared with resting state activity; (3) most importantly, in mPFC, mRT significantly negatively correlated with both resting state PLE and the resting-task PLE difference. These results may lead to a better understanding of the associations between task performance parameters (e.g., mRT) and the scale-free dynamics of spontaneous and task-evoked brain activities. |
| format | Article |
| id | doaj-art-a6d3d796f4d54645bd0689d235424acb |
| institution | OA Journals |
| issn | 0953-4180 1875-8584 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Behavioural Neurology |
| spelling | doaj-art-a6d3d796f4d54645bd0689d235424acb2025-08-20T02:20:10ZengWileyBehavioural Neurology0953-41801875-85842017-01-01201710.1155/2017/28246152824615Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing TaskMasato Kasagi0Zirui Huang1Kosuke Narita2Hitoshi Shitara3Tomokazu Motegi4Yusuke Suzuki5Kazuyuki Fujihara6Sean Tanabe7Hirotaka Kosaka8Koichi Ujita9Masato Fukuda10Georg Northoff11Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, JapanInstitute of Mental Health Research, University of Ottawa, Ottawa, ON, K1Z 7K4, CanadaInstitute of Mental Health Research, University of Ottawa, Ottawa, ON, K1Z 7K4, CanadaDepartment of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, JapanDepartment of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, JapanDepartment of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, JapanDepartment of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, JapanInstitute of Mental Health Research, University of Ottawa, Ottawa, ON, K1Z 7K4, CanadaResearch Center for Child Mental Development, University of Fukui, Eiheiji-cho, Fukui 910-1193, JapanDepartment of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, JapanDepartment of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, JapanInstitute of Mental Health Research, University of Ottawa, Ottawa, ON, K1Z 7K4, CanadaThe scale-free dynamics of human brain activity, characterized by an elaborate temporal structure with scale-free properties, can be quantified using the power-law exponent (PLE) as an index. Power laws are well documented in nature in general, particularly in the brain. Some previous fMRI studies have demonstrated a lower PLE during cognitive-task-evoked activity than during resting state activity. However, PLE modulation during cognitive-task-evoked activity and its relationship with an associated behavior remain unclear. In this functional fMRI study in the resting state and face processing + control task, we investigated PLE during both the resting state and task-evoked activities, as well as its relationship with behavior measured using mean reaction time (mRT) during the task. We found that (1) face discrimination-induced BOLD signal changes in the medial prefrontal cortex (mPFC), posterior cingulate cortex (PCC), amygdala, and fusiform face area; (2) PLE significantly decreased during task-evoked activity specifically in mPFC compared with resting state activity; (3) most importantly, in mPFC, mRT significantly negatively correlated with both resting state PLE and the resting-task PLE difference. These results may lead to a better understanding of the associations between task performance parameters (e.g., mRT) and the scale-free dynamics of spontaneous and task-evoked brain activities.http://dx.doi.org/10.1155/2017/2824615 |
| spellingShingle | Masato Kasagi Zirui Huang Kosuke Narita Hitoshi Shitara Tomokazu Motegi Yusuke Suzuki Kazuyuki Fujihara Sean Tanabe Hirotaka Kosaka Koichi Ujita Masato Fukuda Georg Northoff Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task Behavioural Neurology |
| title | Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task |
| title_full | Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task |
| title_fullStr | Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task |
| title_full_unstemmed | Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task |
| title_short | Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task |
| title_sort | association between scale free brain dynamics and behavioral performance functional mri study in resting state and face processing task |
| url | http://dx.doi.org/10.1155/2017/2824615 |
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