This exploratory finding is promising, but some limitations should be noted. First, the sample size of this study was relatively small; thus, the findings will require replication in a larger study. Second, in this study, only three neuropsychological tests were used, and we observed no significant differences in depression or anxiety among the CID patients in this study. In the future, we could include a broader spectrum of tests to evaluate the emotional and cognitive functions of CID patients. Third, the human brain is not symmetrical. We tried to solve this issue by applying a symmetrical structural template and by smoothing the functional **data** to improve the functional correspondence between homotopic regions. Hence, morphometric asymmetry could not account for the altered VMHC. Fourth, these current results were obtained under a resting condition, without participants' electroencephalograph state in MRI scanning. Future studies should combine both resting-state and task-based fMRI (with monitoring electroencephalograph) to observe whether the interhemispheric connectivity 