Can Brain Stimulation Reduce VR motion sickness in Healthy Young Adults During an Immersive Relaxation Application? A Study of tACS

This study marks the first exploration of whether a non-invasive transcranial alternating current stimulation (tACS) on the left parietal cortex can reduce VR motion sickness (VRMS) induced by a commercial VR relaxation app. Two VRMS conditions were examined for 36 healthy young adults: 1) pure VRMS without a moving platform; 2) VRMS with a side-to-side rotary chair. Participants underwent three counterbalanced tACS protocols at the beta frequency band (sham, treatment, and control). Contrary to our hypothesis, the treatment protocol did not significantly reduce VRMS in either condition. Given the protocol's prior success in our previous tACS study, we discussed potential factors hindering the replication of our earlier achievement.