Fig. 1

Study schedule for data collection. The informed consent and examination will be conducted after recruitment. Matched functional dyspepsia (FD) patients will be then randomized into three groups, where two acupuncture groups will receive treatment. Both clinical outcomes and functional magnetic resonance imaging (fMRI) scans will be performed at three time points including: the baseline, the end of acupuncture treatments, and the end of follow-up. Adverse events will be recorded in the case report at any time during the study. a. NDI Nepean Dyspepsia Index, LDQ Leeds Dyspepsia Questionnaire, SAS Self-Rating Anxiety Scale, SDS Self-Rating Depression Scale, BAI Beck Anxiety Inventory, BDI Beck Depression Inventory, VAS Visual Analog Scale