Attenuation of the pupillary response to luminance and color changes during interocular suppression.
Attenuation of the pupillary response to luminance and color changes during interocular suppression.
复制标题
眼间抑制期间瞳孔对亮度和颜色变化的反应衰减。
DOI：
10.1167/14.5.14
复制
发表时间：
2014
影响因子：
1.8
通讯作者：
Ken Goryo
中科院分区：
文献类型：
--
作者：
Eiji Kimura;Satoru Abe;Ken Goryo
翻译后摘要：摘要本研究探讨了瞳孔收缩亮度和颜色变化的眼间抑制的影响。通过向一只眼睛呈现闪烁的高对比度光栅而向另一只眼睛呈现空间均匀的场来产生稳定的眼间抑制。结果表明，在眼间抑制期间，瞳孔对亮度和颜色变化的反应明显减弱;当刺激变化发生在被抑制的眼睛中时，瞳孔对刺激变化的收缩被延迟且幅度减小。在延伸至远高于阈值水平的宽范围的测试对比度上观察到瞳孔响应的衰减。此外，抑制效果的属性非常相似的那些评估psychopathically使用检测阈值为弱刺激和反应时间为阈上刺激。总体而言，本研究提供了汇聚的证据表明，瞳孔反应可以是一个有用的客观探测人类眼间抑制。结果进行了讨论，鉴于可能的差异参与皮质下和皮质的视觉处理，在驱动瞳孔反应，以及在眼间抑制。
Abstract:Abstract The present study investigated the effects of interocular suppression on the pupillary constriction to luminance and color changes. Stable interocular suppression was produced by presenting a flickering 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 interocular suppression; the pupillary constriction to stimulus changes was delayed and reduced in amplitude when those changes occurred in the suppressed eye. The attenuation of the pupillary response was observed over a wide range of test contrast extending to well above the threshold level. Moreover, the properties of the suppressive effect were very similar to those assessed psychophysically using both detection thresholds for weak stimuli and reaction times for suprathreshold stimuli. Overall, the present study provided converging evidence that the pupillary response can be a useful objective probe of interocular suppression in humans. The results are discussed in view of possible differential involvements of subcortical and cortical visual processing in driving the pupillary response as well as in interocular suppression.