Analysis of foothold selection during locomotion using terrain reconstruction.
| Autor: | Muller KS; Center for Perceptual Systems, The University of Texas at Austin, Austin, United States., Bonnen K; School of Optometry, Indiana University, Bloomington, United States., Shields SM; School of Optometry, Indiana University, Bloomington, United States., Panfili DP; Center for Perceptual Systems, The University of Texas at Austin, Austin, United States., Matthis J; Department of Biology, Northeastern University, Boston, United States., Hayhoe MM; Center for Perceptual Systems, The University of Texas at Austin, Austin, United States. |
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| Jazyk: | angličtina |
| Zdroj: | ELife [Elife] 2024 Dec 09; Vol. 12. Date of Electronic Publication: 2024 Dec 09. |
| DOI: | 10.7554/eLife.91243 |
| Abstrakt: | Relatively little is known about the way vision is used to guide locomotion in the natural world. What visual features are used to choose paths in natural complex terrain? To answer this question, we measured eye and body movements while participants walked in natural outdoor environments. We incorporated measurements of the three-dimensional (3D) terrain structure into our analyses and reconstructed the terrain along the walker's path, applying photogrammetry techniques to the eye tracker's scene camera videos. Combining these reconstructions with the walker's body movements, we demonstrate that walkers take terrain structure into account when selecting paths through an environment. We find that they change direction to avoid taking steeper steps that involve large height changes, instead of choosing more circuitous, relatively flat paths. Our data suggest walkers plan the location of individual footholds and plan ahead to select flatter paths. These results provide evidence that locomotor behavior in natural environments is controlled by decision mechanisms that account for multiple factors, including sensory and motor information, costs, and path planning. Competing Interests: KM, KB, SS, DP, JM, MH No competing interests declared (© 2023, Muller, Bonnen et al.) |
| Databáze: | MEDLINE |
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