Gaze coordination with strides during walking in the cat

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Issue Date
2019-08-28Author
Zubair, Humza N.
Chu, Kevin M. I.
Johnson, Justin L.
Rivers, Trevor J.
Beloozerova, Irina N.
Publisher
Wiley
Type
Article
Article Version
Scholarly/refereed, author accepted manuscript
Rights
© 2019 The Authors. The Journal of Physiology © 2019 The Physiological Society
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Show full item recordAbstract
Vision plays a crucial role in guiding locomotion in complex environments. However, the coordination between the gaze and stride is not well understood. We investigated this coordination in cats walking on a flat surface in darkness or light, along a horizontal ladder and on a pathway with small stones. We recorded vertical and horizontal eye movements and 3-D head movement, and calculated where gaze intersected the walkway. The coordination of gaze shifts away from the animal, gaze shifts toward, fixations, constant gaze, and slow gaze with strides was investigated. We found that even during walking on the flat surface in the darkness, all gaze behaviours were coordinated with strides. Gaze shifts and slow gaze toward started in the beginning of each forelimb’s swing and ended in its second half. Fixations peaked throughout the beginning and middle of swing. Gaze shifts away began throughout the second half of swing of each forelimb and ended when both forelimbs were in stance. Constant gaze and slow gaze away occurred in the beginning of stance. However, not every behaviour occurred during every stride. Light had a small effect. The ladder and stones typically increased the coordination and caused gaze behaviours to occur 3% earlier in the cycle. At faster speeds, the coordination was often tighter and some gaze behaviours occurred 2–16% later in the cycle. The findings indicate that the coordination of gaze with strides is not vision-driven, but is a part of the whole body locomotion synergy; the visual environment and locomotor task modulate it.
Description
This is the peer reviewed version of the following article: Zubair, H. N., Chu, K., Johnson, J. L., Rivers, T. J., & Beloozerova, I. N. (2019). Gaze coordination with strides during walking in the cat. The Journal of physiology, 597(21), 5195–5229. https://doi.org/10.1113/JP278108, which has been published in final form at doi.org/10.1113/JP278108. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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Citation
Zubair, H. N., Chu, K., Johnson, J. L., Rivers, T. J., & Beloozerova, I. N. (2019). Gaze coordination with strides during walking in the cat. The Journal of physiology, 597(21), 5195–5229. https://doi.org/10.1113/JP278108
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