Sousa R, Brenner E, Smeets J B J
Faculty of Human Movement Sciences, Vrije Universiteit, Van Der Boechorstraat 9, 1081 BT Amsterdam, The Netherlands.
Vision Res. 2010 Aug 23;50(18):1786-92. doi: 10.1016/j.visres.2010.05.035. Epub 2010 Jun 1.
When an object is presented binocularly at various distances in complete darkness the range of distances is usually underestimated. We found that adding a second object can reduce the extent to which the range of distances is underestimated. However this only happens if the second object is further than the one of which the distance is to be judged. We propose that the relative disparity between the two objects limits the possible distances of the nearer object because the lines connecting the further object to each of the two eyes must converge in the distance.
当一个物体在完全黑暗中以不同距离进行双眼呈现时，距离范围通常会被低估。我们发现添加第二个物体会减少距离范围被低估的程度。然而，这仅在第二个物体比要判断距离的那个物体更远时才会发生。我们提出两个物体之间的相对视差限制了较近物体的可能距离，因为将较远物体与两只眼睛中的每一只相连的线必须在远处汇聚。
