Figure 1. Experimental design of the study on latent inhibition (LI). Subjects were investigated on 5 consecutive days. Pre-exposure was on 1 day (group 1) or on 3 days (group 3) in the rotation chair (but without rotation), or in a neutral environment on all three occasions (group 0). On days 3 and 4, all subjects were rotated in the chair; on day 5, all subjects were seated in the rotation chair but not rotated.