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Experimental study on binocular interaction using the pupillary response as an objective probe

以瞳孔反应为客观探针的双眼交互实验研究

基本信息

批准号：
17530525
负责人：
KIMURA Eiji
金额：
$ 2.3万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17530525/
关键词：
pupillary response binocular vision binocular rivalry 瞳孔

项目摘要

The purpose of this study was to investigate binocular interaction using the pupillary response as an objective probe. The present study also conducted additional psychophysical investigations to elucidate visual mechanisms underlying binocular interaction.[The pupillometric investigation] The pupillometric study focused on investigating interocular suppression produced by permanent suppression. Permanent suppression refers to a stable suppression which can be produced by presenting a high-contrast grating to one eye and a spatially homogeneous field to the other eye. The results showed that the pupillary responses to luminance as well as color changes were clearly attenuated during permanent suppression. The attenuation of the response was observed over a wide range of test contrast. Moreover, the analysis of response latency suggested that the pupillary response to luminance changes is mediated by the subcortical pathway, whereas the response to chromatic changes reflects the contrib … More ution of cortical pathways. Overall, the present findings indicate that the pupillary response can be a very useful objective probe to investigate binocular interaction. Furthermore, the attenuation of the response to luminance changes during permanent suppression implies that interocular suppression adversely affects subcortical as well as cortical visual processing.[The psychophysical investigation] The psychophysical study investigated visibility modulation (VM) during binocular rivalry. The VM refers to the phenomenon in which one of rivalrous flashes is phenomenally suppressed and the other becomes dominant after a certain stimulus was presented prior to the flashes. When the VM was investigated using color and luminance flashes, VM occurred in an eye-specific as well as stimulus-specific fashion depending upon temporal parameters of the stimuli. However, the investigation using spatial patterns revealed that the VM was predominantly stimulus-specific. These findings suggest that dominance and suppression of binocular inputs are determined in distinct fashions for color and pattern stimuli. Less

本研究旨在以瞳孔反应为客观探针，探讨双眼互动。本研究还进行了额外的心理物理调查，以阐明视觉机制的双目互动。[The瞳孔测量研究]瞳孔测量研究集中于研究由永久抑制产生的眼间抑制。永久性抑制是指通过向一只眼睛呈现高对比度光栅并向另一只眼睛呈现空间均匀的场来产生的稳定抑制。结果表明，瞳孔对亮度和颜色变化的反应在永久抑制期间明显减弱。在很宽的测试对比度范围内观察到响应的衰减。此外，反应潜伏期的分析表明，瞳孔对亮度变化的反应是由皮层下通路介导的，而对颜色变化的反应反映了皮质下通路的贡献。 ...更多信息皮质通路的延伸。总体而言，目前的研究结果表明，瞳孔反应可以是一个非常有用的客观探针，调查双眼相互作用。此外，在永久性抑制期间对亮度变化的响应的衰减意味着眼间抑制对皮层下以及皮层视觉处理产生不利影响。[The心理物理学研究调查了双眼竞争期间的可见度调制（VM）。VM是指在闪光之前给予一定的刺激后，竞争闪光中的一个被现象性地抑制，而另一个成为优势闪光的现象。当VM进行了调查，使用颜色和亮度闪烁，VM发生在眼睛特定的以及刺激特定的方式取决于时间参数的刺激。然而，使用空间模式的调查显示，VM主要是刺激特异性的。这些研究结果表明，双眼输入的优势和抑制是由颜色和图案刺激以不同的方式决定的。少