Is it true that using the automatic swinging yao lan (sarong) can cause damage to the baby brain due to constant swinging motion?

Not true. We hv been using the automated yaolan since 1 month old, always set to the lowest speed with timer or either 30mins or 60mins. By then when it stops, our baby would have fallen asleep. Very cooling and good ventilation to use it in the day, a good helper to let us keep our sanity in check as our baby is very happy to be in the yaolan & sleeps longer :)