2.7. Statistics
All univariate data were analyzed by SPSS software version 22 (SPSS Inc., Chicago IL, USA). Data are depicted as mean ± standard deviation, median and interquartile ranges, and number and percentages. Between-group baseline differences were tested with independent Student’s fMRI processing and analyzing was performed using FSL version 5.0.9 (created by the Analysis Group, Oxford University, Oxford, UK). First, four contrasts were calculated, two for each task [After the whole-brain analysis, between-group differences for all four contrasts were specifically analyzed for four pre-defined anatomical ROIs: the amygdala, caudate nucleus, putamen, and insula. As part of the basal ganglia, the caudate and putamen are implicated in reward processing and conditioning and have previously been found to play a complex integrating role in food-related reward signals to behavior [All microbiota-related analyses were performed in R (version 4.0.0) [