Sex Differences in Microstructural White Matter Alterations of Mathematics Anxiety Based on Diffusion MRI Connectometry

Background: Mathematics Anxiety (MA) is a feeling of stress, tension, and fear in situations engaging with math-related tasks. Herein, we utilized Diffusion Magnetic Resonance Imaging (DMRI) connectometry approach to tracking white matter (WM) fibers with a significant correlation with the severity of MA. Methods: A total of 77 healthy adult participants (50 males, mean age +/- SD = 26.00 +/- 3.54) were included from the Leipzig Study for Mind-Body-Emotion Interactions (LEMON) database. Abbreviated Math Anxiety Scale (AMAS) questionnaire was used for assessing the participant's feelings when facing a math-related activity. DMRI data were prepared and analyzed with the connectometry approach. Multiple regression models were then carried out to examine the correlation of WM microstructural connectivity with AMAS score. Results: DMRI connectometry showed a significant association between AMAS score and increased microstructural connectivity in left arcuate fasciculus (AF), the body of corpus callosum (CC), right cingulum, and left inferior longitudinal fasciculus (ILF) in male participants with moderate effect size false discovery rate (FDR = 0.040). Furthermore, DMRI connectometry in females identified a positive correlation between AMAS score and microstructural connectivity in the genu of CC, right ILF, and bilateral fornices with small-to-moderate effect size (FDR = 0.012) and a negative correlation between AMAS score and microstructural connectivity in the bilateral cingulum with small-to-moderate effect size (FDR = 0.032) Conclusion: Our findings support that structures with functional relation to language processing areas (e.g., AF) or limbic system (cingulum, CC, fornix, and ILF) play a significant role in MA.