An experimental rotation chair paradigm is used to investigate whether a placebo intervention on motion sickness affects subjective outcome measures only or also affects behavioral and objective measures in a balanced placebo design.
Weimer, K., Horing, B., Muth, E. R., Enck, P. How to Study Placebo Responses in Motion Sickness with a Rotation Chair Paradigm in Healthy Participants. J. Vis. Exp. (94), e52471, doi:10.3791/52471 (2014).