Studies of human depth perception using a reverse perspective illusion and its application to diagnostics in clinical medicine.

该研究项目的目的是利用反向透视错觉探索人类深度知觉的自上而下和自下而上的机制，并将研究结果应用于临床医学中精神疾病的诊断。所获得的结果如下所述。通过fMRI测量反向透视错觉的内部机制。结果发现，BA 19/39、BA 37/19和BA 7的每个脑区在错觉被感知时都被强烈激活。此外，在没有图像线索的刺激中，当被试努力“看到”错觉时，额叶也被激活。这些结果显示了错觉过程中自上而下和自下而上的过程之间的相互作用。为了研究图片线索对错觉的影响，采用配对比较法和双眼视差调节法来评估错觉的强度。这些方法与传统方法相比， ...更多信息 测量主体和反向透视物体之间的距离。结果表明，良好的协议。实验结果表明，本文提出的方法可以有效地评价错觉的强度和图形线索的影响。本研究分别对眼动、身体运动的影响、双眼视差引起的表面知觉、运动视差引起的深度知觉、2D图像线索引起的深度知觉进行了研究，明确了深度知觉的基本性质，并利用立体计算机图形学技术开发了一个实验系统，通过改变参数来呈现反透视错觉（例如图像线索、几何因素和双眼视差）。使用该系统对睡眠剥夺状态的被试进行了错觉的感知实验，明确了错觉感知的敏感性随着睡眠剥夺而福尔斯。这表明实验结果应用于精神疾病诊断的可能性。少

This research project was worked on to explore top-down and bottom-up mechanisms of human depth perception using a reverse perspective illusion and to apply the findings to a diagnostics of a psychiatric disease in clinical medicine. Obtained results are described on below.Internal mechanism of the reverse perspective illusion was measured by fMRI. It was found that each brain area of BA19/39, BA37/19 and BA7 are strongly activated when the illusion is perceived. Further more, in case of the stimuli which has no pictorial cues for the illusion, as subjects made efforts to 'see' the illusion, activations were also found in frontal lobe. These results show the interactions between the top-down and the bottom-up processes during the illusion.To study the influence of the pictorial cues on the illusion, a paired comparison method and the binocular disparity adjusting method was applied to evaluate the strength of the illusion. These methods ware compared to the conventional method which me … More asure the distance between the subject and the reverse perspective object. The results show good agreements. It was confirmed that the newly developed methods can be used effectively to evaluate the strength of the illusion and influence of the pictorial cues.Psychological experiments to study basic properties of depth perception were performed. Eye movement, influence of body motion, surface perception from binocular disparity, depth perception from motion parallax, depth perception from 2D pictorial cues, were studied independently and made it dear about the basic property of depth perception.An experimental system using a stereo computer graphics technology was developed to present reverse perspective illusion by changing parameters (such as pictorial cues, geometrical factors, and binocular disparities). A perception experiment of the illusion was made to subjects of the sleep deprivation state using the system, and made it clear that the sensitivity to the perception of the illusion falls by sleep deprivation. This indicates the possibility of the application the results of the experiment to diagnostics of the psychiatric disease. Less