Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task
Joint Authors
Northoff, Georg
Kasagi, Masato
Huang, Zirui
Narita, Kosuke
Shitara, Hitoshi
Motegi, Tomokazu
Suzuki, Yusuke
Fujihara, Kazuyuki
Tanabe, Sean
Kosaka, Hirotaka
Ujita, Koichi
Fukuda, Masato
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-21
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Kasagi, Masato& Huang, Zirui& Narita, Kosuke& Shitara, Hitoshi& Motegi, Tomokazu& Suzuki, Yusuke…[et al.]. 2017. Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task. Behavioural Neurology،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1139761
Modern Language Association (MLA)
Kasagi, Masato…[et al.]. Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task. Behavioural Neurology No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1139761
American Medical Association (AMA)
Kasagi, Masato& Huang, Zirui& Narita, Kosuke& Shitara, Hitoshi& Motegi, Tomokazu& Suzuki, Yusuke…[et al.]. Association between Scale-Free Brain Dynamics and Behavioral Performance: Functional MRI Study in Resting State and Face Processing Task. Behavioural Neurology. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1139761
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1139761