| Autor: |
Vaidyanathan N; 1Department of Systems Design Engineering, University of Waterloo, Waterloo, Canada., Penny S; 2Department of Mechanical Engineering, University of Illinois of Chicago, Chicago, Illinois, USA., Berniker M; 2Department of Mechanical Engineering, University of Illinois of Chicago, Chicago, Illinois, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of motor behavior [J Mot Behav] 2020; Vol. 52 (2), pp. 236-248. Date of Electronic Publication: 2019 May 20. |
| DOI: |
10.1080/00222895.2019.1609409 |
| Abstrakt: |
Behavioral studies consistently find that subjects move their hand along straight paths despite considerations that suggest reaches should be curved. Literature on this topic makes it clear that the experimentally displayed feedback influences how subjects reach. Could the standard visual feedback, a displayed cursor, explain the lack of path curvature in experimental results? To address this question, we conducted three experiments to examine reach behavior in the absence of the standard visual feedback. In the first experiment, we found significant increases in curvature as visual feedback was progressively extinguished across groups. A second experiment revealed that practiced reaches became curved after the standard visual feedback was removed. A final experiment found that subjects' reaches made before and after a brief display of visual feedback were similar, indicating a preference for specific curved trajectories. Our results suggest that the consistently straight reaches often observed could be due to a bias to move the displayed cursor straight, which when removed reveal subject-specific preferences for reaches that are often curved. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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