Hu Xiaofei, Hisakata Rumi, Kaneko Hirohiko
J Opt Soc Am A Opt Image Sci Vis. 2019 Oct 1;36(10):1699-1708. doi: 10.1364/JOSAA.36.001699.
Research has shown that the pupil responds differently depending on the spatial frequency of the gazing stimulus. In this study, we examined the effects of spatial- and object-based attention on pupillary response as a function of spatial frequency using grating stimuli and filtered natural images by manipulating the participants' attentional state. Furthermore, we aimed to obtain the pupillary response to spatial frequency accurately by reducing the contamination of unintended spatial frequency components in the stimulus by using gratings with a Gabor envelope. We revealed that all stimuli could elicit large pupil constriction for an intermediate range (2-8 c/d) of spatial frequency and that both spatial- and object-based attention modulate the pupillary response function to spatial frequency. These facts may enhance Human Computer Interaction design to use people's attentional state.
研究表明，瞳孔会根据注视刺激的空间频率做出不同反应。在本研究中，我们通过操纵参与者的注意力状态，使用光栅刺激和经过滤波的自然图像，研究了基于空间和基于物体的注意力对作为空间频率函数的瞳孔反应的影响。此外，我们旨在通过使用具有伽柏包络的光栅减少刺激中意外空间频率成分的干扰，从而准确获得对空间频率的瞳孔反应。我们发现，所有刺激在空间频率的中间范围（2-8周/度）都能引起较大的瞳孔收缩，并且基于空间和基于物体的注意力都会调节对空间频率的瞳孔反应函数。这些事实可能会加强人机交互设计对人们注意力状态的利用。
