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ERIC Number: EJ993773
Record Type: Journal
Publication Date: 2012-Oct
Pages: 13
Abstractor: As Provided
ISSN: ISSN-0096-1523
The Learning of Visually Guided Action: An Information-Space Analysis of Pole Balancing
Jacobs, David M.; Vaz, Daniela V.; Michaels, Claire F.
Journal of Experimental Psychology: Human Perception and Performance, v38 n5 p1215-1227 Oct 2012
In cart-pole balancing, one moves a cart in 1 dimension so as to balance an attached inverted pendulum. We approached perception-action and learning in this task from an ecological perspective. This entailed identifying a space of informational variables that balancers use as they perform the task and demonstrating that they improve by traversing the space to the loci of more useful variables. We presented a novel information space--including fractional derivatives of pendulum angle (e.g., halfway between angle and angular velocity)--as possible information for balancing. Fourteen college students tried to meet a criterion of balancing the pole for 30 s on 3 of 5 successive trials, up to a maximum of 150 attempts. Loci in the fractional derivative space predicted the time series of force production well. Systematic differences were seen in loci as a function of success, and systematic changes in locus were seen with learning. The fractional derivatives were shown to predict pole angles a short time interval into the future, allowing balancers to prospectively control the action and thereby nullify visuomotor delay. In addition to loci in the information space, we analyzed loci in a calibration space, reflecting the gain relating force to information. (Contains 2 tables, 9 figures and 5 footnotes.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Connecticut