Diner D B, Fender D H
California Institute of Technology, Pasadena 91125.
J Opt Soc Am A. 1988 Jul;5(7):1163-9. doi: 10.1364/josaa.5.001163.
The range of fusion in the human binocular vision system has been shown by many research groups to be capable of extension. Although each of these research groups tested the extension of fusion under different conditions, the majority agreed that an extension of fusion is possible, and most have noted a variety of variables that contribute to the phenomenon. The extension of fusion may be interpreted in at least two ways. The first is that the range over which fusion is possible is enlarged, and the second is that the range is shifted. Therefore a study of human binocular fusional ranges was performed to clarify the nature of the extension of Panum's fusional area. The following results were obtained: (1) A shift of the fusional area occurs when one of a pair of fused retinally stabilized images is moved into disparate locations on the retinas. Results for one observer demonstrate a corresponding small enlargement of the fusional area. Thus the extension of the fusional area not only involves the recruitment of retinal locations into the fusional area that are not normally in the area but also involves the loss from the fusional area of certain retinal locations that are normally within it. (2) A continually present stimulus fuses over a wider range with a flashed stimulus than with another continually present stimulus.
许多研究小组已表明，人类双眼视觉系统中的融合范围能够扩展。尽管这些研究小组中的每一个都在不同条件下测试了融合的扩展情况，但大多数人都认为融合扩展是可能的，并且大多数人都指出了导致这一现象的各种变量。融合扩展至少可以有两种解释。第一种是融合可能的范围扩大了，第二种是范围发生了偏移。因此，进行了一项关于人类双眼融合范围的研究，以阐明潘诺融合区扩展的本质。得到了以下结果：(1) 当一对融合的视网膜稳定图像中的一个被移动到视网膜上的不同位置时，融合区会发生偏移。一位观察者的结果表明融合区相应地有小幅扩大。因此，融合区的扩展不仅涉及将通常不在该区域的视网膜位置纳入融合区，还涉及融合区中某些通常在其中的视网膜位置的丢失。(2) 持续存在的刺激与闪烁刺激融合的范围比与另一个持续存在的刺激融合的范围更广。
