O'Hare Louise
School of Psychology, University of Lincoln, Lincoln, UK.
Perception. 2017 Jun;46(6):709-727. doi: 10.1177/0301006616683202. Epub 2016 Dec 11.
Op-art-based stimuli have been shown to be uncomfortable, possibly due to a combination of fixational eye movements (microsaccades) and excessive cortical responses. Efforts have been made to measure illusory phenomena arising from these stimuli in the absence of microsaccades, but there has been no attempt thus far to decouple the effects of the cortical response from the effect of fixational eye movements. This study uses flash afterimages to stabilise the image on the retina and thus reduce the systematic effect of eye movements, in order to investigate the role of the brain in discomfort from op-art-based stimuli. There was a relationship between spatial frequency and the magnitude of the P300 response, showing a similar pattern to that of discomfort judgements, which suggests that there might be a role of discomfort and excessive neural responses independently from the effects of microsaccades.
基于视幻艺术的刺激已被证明会令人不适，这可能是由于注视性眼球运动（微扫视）和过度的皮层反应共同作用的结果。人们已努力在没有微扫视的情况下测量由这些刺激产生的错觉现象，但迄今为止尚未尝试将皮层反应的影响与注视性眼球运动的影响区分开来。本研究使用闪光后像来稳定视网膜上的图像，从而减少眼球运动的系统性影响，以探究大脑在基于视幻艺术的刺激所引起的不适中所起的作用。空间频率与P300反应的幅度之间存在关联，呈现出与不适判断相似的模式，这表明在独立于微扫视影响的情况下，不适和过度的神经反应可能发挥了作用。
