Motion sickness can be devided into three categories: 1. by motion that is felt but not seen. 2. by motion that is seen but not felt. 3. when both systems detect motion but they do not correspond.
Motion sickness can be devided into three categories: 1. by motion that is felt but not seen. 2. by motion that is seen but not felt. 3. when both systems detect motion but they do not correspond.