Department of Information and Communications Engineering, School of Engineering, Tokyo Institute of Technology, Yokohama, Japan.
J Vis. 2021 Jan 4;21(1):11. doi: 10.1167/jov.21.1.11.
Pupils become smaller when people attend to a bright disk as compared to a dark disk. However, people can divide their attention into several distinct positions, which is referred to as divided attention, and pupillary responses under such conditions have not been investigated. In this study, we examined how pupils would respond when people attended to two disks presented at two distinct positions by conducting three experiments. We found that the pupillary response when attending to two disks with different luminance was larger than when attending to a single brighter disk and was comparable to that when attending to a single darker disk, whereas the pupillary response when attending to two disks with identical luminance was not larger than when attending to a single disk (irrespective of the disk luminance). Furthermore, we found that the magnitude of pupillary dilation was determined by the magnitude of the luminance difference between two disks. These results make a useful contribution to the literature on human pupillary responses.
当人们注视明亮的圆盘而不是黑暗的圆盘时，瞳孔会变小。然而，人们可以将注意力分为几个不同的位置，这被称为分散注意力，而在这种情况下的瞳孔反应尚未得到研究。在这项研究中，我们通过进行三项实验来研究当人们注视两个位于两个不同位置的圆盘时，瞳孔会如何反应。我们发现，当注视两个具有不同亮度的圆盘时，瞳孔的反应比注视单个更亮的圆盘时更大，并且与注视单个更暗的圆盘时相当，而当注视两个具有相同亮度的圆盘时，瞳孔的反应并不比注视单个圆盘（无论圆盘的亮度如何）时更大。此外，我们发现瞳孔扩张的幅度取决于两个圆盘之间亮度差的大小。这些结果为人类瞳孔反应的文献做出了有益的贡献。
