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ERIC Number: EJ934584
Record Type: Journal
Publication Date: 2006-Apr
Pages: 10
Abstractor: As Provided
Reference Count: 53
ISSN: ISSN-0096-1523
The Effect of the Muller-Lyer Illusion on the Planning and Control of Manual Aiming Movements
Mendoza, Jocelyn E.; Elliott, Digby; Meegan, Daniel V.; Lyons, James L.; Welsh, Timothy N.
Journal of Experimental Psychology: Human Perception and Performance, v32 n2 p413-422 Apr 2006
Two experiments used Muller-Lyer stimuli to test the predictions of the planning-control model (S. Glover, 2002) for aiming movements. In Experiment 1, participants aimed to stimuli that either remained the same or changed upon movement initiation. Experiment 2 was identical except that the duration of visual feedback for online control was manipulated. The authors found that the figures visible during movement planning and online control had additive effects on endpoint bias, even when participants had ample time to use visual feedback to modify their movements (Experiment 2). These findings are problematic not only for the planning-control model but also for A. D. Milner and M. A. Goodale's (1995) two visual system explanation of illusory bias. Although our results are consistent with the idea that a single representation is used for perception, movement planning, and online control (e.g., V. H. Franz, 2001), other work from our laboratory and elsewhere suggests that the manner in which space is coded depends on constraints associated with the specific task, such as the visual cues available to the performer. (Contains 4 figures, 3 tables and 5 footnotes.)
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Canada