Correlation between different motivational traits and brain function in resting state
LI Jiahan
WANG Xin
CHENG Lili
ZHANG Xuejun
Abstract：Objebtive Motivation traits include motivational approach system (BAS) and behavioral inhibition system (BIS). To analyze brain activity of different motivational traits in resting-state, and to test the relationships between functional connectivity and trait approach/avoidance motivationby using resting state functional magnetic resonance imaging technology. Methods A total of 38 healthy college students completed BIS/ BAS questionnaire, and were classified into three groups:high BAS group who had high BAS low BIS, high BIS group (high BIS low BAS),and control group (low BAS low BIS).Resting-state fMRI scan and sagittal structural images were collected. All preprocessing steps and statistics were carried out. The high BAS group and high BIS group were compared to the control group respectively.The brain areas with significant difference were detected by a two-sample t test. The Seed-based Correlation Analysis was used to explore functional connectivity for three predefined networks.Spearman test was used to analyze the relationships between functional connectivity and trait approach/avoidance motivation. Results Compared to the control group, amplitude of low-frequency fluctuation (ALFF) was significantly increased at left calcarine cortices, precuneus, posterior cingulate cortex (PCC), and middle frontal gyri (MFG), right caudate nucleus, and bilateral anterior cingulate cortex (ACC) in the high BAS group;at the right frontal lobe, temporal lobe, inferior parietal lobule, calcarine cortices, and the left PCC in the high BIS group. ALFF was significantly decreased at the bilateral thalamus, right superior temporal gyriand, and left parietal lobe in the high BAS group;at the left frontal lobe, parietal lobe, and bilateral ACC in the high BIS group. The BAS score was significantly correlated with the strength between DMN-FPN, and DAN-FPN (r=0.69,P<0.001; r=-0.40,P=0.037, respectively), the BIS score was significantly correlated with DMN-FPN(r=-0.41,P=0.036).Conclusions Prefrontal asymmetry on different motivational traits exists in resting-state. Trait approach motivation and trait avoidance motivation are significantly correlated with functionalconnectivity.The motivational trait isaneural activity involved multiple brain areas.
Keywords：Motivational traitResting-stateAmplitude of low-frequency fluctuationFunctional connectivityBrain area
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 468-472 )