In this study, we investigated the effects of an augmented reality (AR)-based mirror therapy program that combines peripheral electrical stimulation (PES) with mirror visual feedback (MVF) on brain activity. The program was tested on three healthy adults in their 20s. The results showed that the combined feedback of MVF and PES was effective in enhancing motor learning-related brain activity in the mirror-reflected hand. Further research will investigate the effects of different AR feedback factors on brain activity, which will aid in developing optimal rehabilitation protocols. These findings could be applied to rehabilitation therapy for stroke patients, potentially improving the effectiveness of their treatment.