Visual illusion in virtual world alters women?s target-directed walking
| Autor: | Lei Hao, Kathleen A. Turano, Jane M. Eisinger, John C. Hicks, Raghu R. Chivukula, Sidhartha Chaudhury |
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| Rok vydání: | 2004 |
| Předmět: |
Adult
Male Adolescent genetic structures media_common.quotation_subject Illusion Walking Space (commercial competition) behavioral disciplines and activities Task (project management) Sex Factors Perception Humans Induced movement media_common Optical illusion Distance Perception General Neuroscience Motor control Illusions Action (philosophy) Head Movements Space Perception Linear Models Female Psychology Social psychology Photic Stimulation Psychomotor Performance psychological phenomena and processes Cognitive psychology |
| Zdroj: | Experimental Brain Research. 159:360-369 |
| ISSN: | 1432-1106 0014-4819 |
| DOI: | 10.1007/s00221-004-1961-7 |
| Popis: | In this study we investigated whether a visual illusion located in far space alters a person's open-loop, target-directed walking path in the same manner as it alters the perception of the target's position. Through the use of immersive VR the subject was able to walk physically to the location of a target embedded in a scene that was manipulated to create a visual illusion, known as the induced Roelofs effect. This illusion has been shown to alter the perception of a target's position. The experiment consisted of two tasks: a perception task and an action task. In the perception task, subjects viewed the scene for 1 s, it disappeared, and they were to report the target's location verbally. The results showed that the visual illusion altered the reported positions in all but one subject. In the action task, subjects viewed the scene for 1 s, it disappeared, and the subjects were asked to walk to the target's location. The results showed that the illusion significantly altered the walking paths of most of the women and less than half of the men. A significant gender effect was observed; women's walking paths deviated, on average, by 7.1 degrees and men's, by only 2.0 degrees . These results indicate that action tasks in far space are susceptible to the effects of visual illusions, unlike the action tasks in near space that reportedly have been resistant to them. Furthermore, the significant gender effect suggests that men and women either have different strategies and/or employ different mechanisms when executing a visually guided task in far space. |
| Databáze: | OpenAIRE |
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