Research on the Influence of Visual Illusion between Visually Perceived System and Visually Guided Action System

視錯覺圖形對視覺認知系統與視覺引導行動控制系統之影響研究

陳建雄(Chien-Hsiung Chen) ； 簡佑宏(Yu-Hung Chien)

《中國技術學院學報》 26期 (2004/07) Pp. 245-252

https://doi.org/10.6369/CKCSHYHP.200407.0245

摘要

從許多生活經驗得知視錯覺（Visual Illusion）影響人類對物體大小、色彩、空間、位置的認知，但當以視覺經驗為基礎引導手實際行動觸摸相同物體時，手部的動作是否亦受到視錯覺的影響，在視錯覺相關文獻中仍然處於爭論之中。因此，視覺認知系統與視覺引導行動系統是否是分離的，乃是本研究欲探討的主題，並藉此瞭解視錯覺圖形如何影響人類的視覺系統，並期將此知識運用在設計方面。本研究乃在運用實驗設計，企圖對上述有關視錯覺的理論加以試驗，探討當一物件以視錯覺圖像為背景時，受試者被要求指出物件中心位置時，視覺位置與視覺形狀的錯覺對視覺認知系統與視覺引導行動系統是否有不同的影響。研究顯示（1）無論視覺認知系統或視覺引導行動系統依錯覺圖形的種類受到不同程度的影響，皆與實際中心具顯著差異，但就本實驗所用之三個錯覺圖形，視覺引導行動系統較為準確；（2）三個錯覺圖形無論對視覺認知系統或與視覺引導行動系統，Judd Illusion所造成的視錯覺誤差較大；（3）提供受試者工具以引導對視錯覺圖形的認知，會顯著地降低受試者錯誤估計物件中心的機會。

關鍵字

視錯覺 ； 視覺認知系統 ； 視覺引導行動控制系統

並列摘要

Visual illusions occur around us all the time, which present in nature and appear when you least expect it. It is well known that visual illusions can have a dramatic effect upon our visual perception of an object 's size and position. However, whether visual illusions have a similar influence on visual guided action or not, it remains the subject of much debate. The purpose of this study is to explore whether the visual information used to identify and categorize an object would be similar to the visual information used to plan and control visually guided movements directed toward that object. The outcome of this study will be helpful for designers to understand our visual information system and apply that knowledge to the design practice. In order to achieve the purpose of this study mentioned above, three visual illusions as the experiment's apparatus are applied to examine the relative effect of visual illusions on both the visual perceived center of an object and the position of a grasp on that object when a balanced lift is required. The results of the experiment show that (1) Illusions influence both the perceived and the grasped estimates of the center position, but the grasp center is more veridical; (2) Judd-illusion, one of the three visual illusions, has a bigger degree of effect than two other illusions on both the perceived and the grasped estimates of the center position; (3) By providing the participants with a mean to guide their visual perception of these illusions, the errors from the estimation of the center position can be significantly reduced.

並列關鍵字

Visual Illusion ； Visually Perceived System ； Visually Guided Action System