Recent studies claim that estimating the magnitude of the spatial and temporal aspects of one's self-motion shows similar characteristics, suggesting shared processing mechanisms between these two dimensions. While the estimation of other magnitude dimensions, such as size, number, and duration, exhibits negative aftereffects after prolonged exposure to the stimulus, it remains to be elucidated whether this could occur similarly in the estimation of the distance travelled and time elapsed during one's self-motion. We sought to fill this gap by examining the effects of adaptation on distance and time estimation using a virtual navigation task. We found that a negative aftereffect occurred in the distance reproduction task after repeated exposure to self-motion with a fixed travel distance. No such aftereffect occurred in the time reproduction task after repeated exposure to self-motion with a fixed elapsed time. Further, the aftereffect in distance reproduction occurred only when the distance of the adapting stimulus was fixed, suggesting that it did not reflect adaptation to time, which varied with distance. The estimation of spatial and temporal aspects of self-motion is thus processed by partially separable mechanisms, with the distance estimation being similar to the estimation of other magnitude dimensions.

最近的研究声称，估计一个人自我运动的空间和时间方面的大小显示出相似的特征，表明这两个维度之间的共享处理机制。虽然对其他大小维度的估计，如大小、数量和持续时间，在长时间暴露于刺激后会表现出负面的后效应，但在估计一个人的行进距离和经过的时间时，这是否会类似地发生仍有待阐明-运动。我们试图通过使用虚拟导航任务检查适应对距离和时间估计的影响来填补这一空白。我们发现，在重复暴露于固定行驶距离的自运动后，距离再现任务会产生负面影响。在以固定的经过时间反复暴露于自我运动后，在时间再现任务中没有发生这种后遗症。此外，距离再现的后遗症仅在适应刺激的距离固定时才会发生，这表明它没有反映对时间的适应，时间的适应随距离而变化。因此，自运动的空间和时间方面的估计由部分可分离的机制处理，距离估计类似于其他幅度维度的估计。