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Related Experiment Video

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Complete and Partial Resuscitative Endovascular Balloon Occlusion of the Aorta for Hemorrhagic Shock

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Published on: May 19, 2022

Amodal completion is not completed only behind the occluder.

Midori Takashima¹, Teruo Fujii, Ken Shiina

¹Department of Psychology, Chuo University, 742-1 Higashinakano, Hachioji-shi, Tokyo 192-0393, Japan. jade@tamacc.chuo.u.ac.jp

|November 17, 2009

Summary

This study shows how figure orientation and shape influence amodal completion, a visual perception phenomenon. Symmetrical shapes are perceived with vertical orientations, while smooth continuity is seen in diagonal orientations.

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Area of Science:

Cognitive Psychology
Visual Perception

Background:

Amodal completion is a key aspect of visual perception, allowing the brain to infer unseen parts of objects.
Previous research by Markovich (2002) highlighted the roles of symmetry and smooth continuity in this process.

Purpose of the Study:

To investigate how figure orientation and the shapes of occluding/occluded figures affect amodal completion.
To determine the influence of visible contour and contextual relations on amodal completion.

Main Methods:

Presented figures in various orientations (vertical, horizontal, diagonal).
Modified the shape of the occluded figure's exposed side (straight vs. curved).
Altered the occluder's shape (disk, half-disk, quarter-disk).

Main Results:

Confirmed Markovich's findings on amodal completion via smooth continuity and symmetry.
Orientation influenced perception: vertical axes favored symmetry, diagonal axes favored smooth continuity.
Visible contour and the overall figure context significantly impacted amodal completion.

Conclusions:

Figure orientation and shape are critical factors in amodal completion.
The contextual relationship of the entire figure is significant for accurate visual inference.