Two experiments evaluated the importance of temporal integration for the perception and discrimination of solid object shape. In Experiment 1, observers anorthoscopically viewed moving or stationary cast shadows of naturally shaped solid objects (bell peppers, Capsicum annuum) through narrow (4-mm wide) slits. At any given moment, observers could only see a very small portion of the overall object shape (generally less than 10%). The results showed that the observers' discrimination performance for the moving cast shadows was much higher than that obtained for the stationary shadows, demonstrating the ability to temporally integrate the piecemeal momentary information about shape that was available through the narrow apertures. In a second experiment, estimates of the strength of the observers' impressions of solid shapes rotating in depth were obtained as well as discrimination accuracies; perceptions of the original moving condition were compared with a new condition where the frames of the apparent motion sequences depicting solid objects in continuous motion (behind the slits) were randomly scrambled. The observers perceived the anorthoscopic displays as depicting solid objects rotating in depth, but only in the continuous motion condition. Interestingly, the discrimination performance in the scrambled condition remained relatively high-observers were still able to integrate information across the multiple scrambled frames in order to produce discrimination performance that was significantly higher than that obtained in the stationary shadow condition. This study was the first to thoroughly evaluate whether and to what extent human observers can effectively discriminate and perceive solid object shape anorthoscopically.

中文翻译：

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时间整合在对实体形状的感知和辨别中。

两项实验评估了时间整合对于感知和辨别固体物体形状的重要性。在实验1中，观察者通过狭窄（4毫米宽）的狭缝从自然形态的固体物体（甜椒，辣椒）中移动或静止的投射阴影进行了观察。在任何给定时刻，观察者只能看到物体整体形状的一小部分（通常小于10％）。结果表明，观察者对移动投射阴影的辨别性能远高于对固定投射阴影的辨别性能，这表明可以暂时整合可通过狭窄孔径获得的有关形状的零散瞬时信息的能力。在第二个实验中，估算观察者的力量 获得了在深度上旋转的实心形状的印象以及判别精度；将原始运动条件的感知与新条件进行了比较，在新条件下，随机运动了描绘连续运动的固体物体（在缝隙后）的视在运动序列的帧。观察者将正视镜显示为描绘了深度旋转但仅在连续运动条件下旋转的固体对象。有趣的是，在加扰条件下的判别性能仍然相对较高，观察者仍然能够跨多个加扰帧整合信息，以产生明显高于在静止阴影条件下获得的判别性能。