Measurements of the subjective visual horizontal (SVH) were made for different heading positions in a swing-out gondola centrifuge. The roll position of the gondola was controlled so that the subject was always upright with respect to the gravitoinertial force. The subject was asked to adjust a narrow luminous line so that it was perceived as horizontal. Each subject underwent four separate runs (2G, 5 minutes): heading forwards (F), backwards (B), towards the centre (C), and towards the periphery (P). For position F and B there was, after acceleration to 2G, a tilt of the SVH that was compensatory with respect to the gondola inclination. The magnitude of tilt was larger for position F (20.9 +/- 8.4 degrees) than for position B (-6.9 +/- 10.5 degrees), p<0.001, n = 8. For position C and P there were no considerable SVH tilts: 6.4 +/- 10.7, n = 8 (I), 2.1 +/- 4.8, n = 7 (P) degrees. The effects of deceleration were very small for all positions, i.e. the SVH was close to the gravitational horizontal. These findings suggest that the effects of a complex semicircular canal stimulus are to a high extent dependent on the time pattern of the different stimulus components.