WALKING OF A DECEREBRATE CAT AT SIMULTANEOUSLY DIFFERENT SPEEDS ON A SPLIT TREDBAN

V. A. Lyakhovetskii; Ляховецкий В. А.; P. Y. Shkorbatova; Шкорбатова П. Ю.; O. V. Gorskii; Горский О. В.; P. E. Musienko; Мусиенко П. Е.; N.S. Merkulyeva; Меркульева Н. С.

doi:10.31857/S0044467723010100

WALKING OF A DECEREBRATE CAT AT SIMULTANEOUSLY DIFFERENT SPEEDS ON A SPLIT TREDBAN

Authors: Lyakhovetskii V.A.¹, Shkorbatova P.Y.²^,3, Gorskii O.V.⁴^,3, Musienko P.E.⁴^,3, Merkulyeva N.²
Affiliations:
1. Pavlov Institute of Physiology, Russian Academy of Sciences, Physiology of Movements lab.
2. Pavlov Institute of Physiology, Russian Academy of Sciences, Neuromorphology lab.
3. Institute of Translational Biomedicine, Saint-Petersburg State University, Neuroprostheses lab.
4. Pavlov Institute of Physiology, Russian Academy of Sciences, Neuromodulation of Motor and Visceral Functions lab.
Issue: Vol 73, No 1 (2023)
Pages: 76-87
Section: ФИЗИОЛОГИЧЕСКИЕ МЕХАНИЗМЫ ПОВЕДЕНИЯ ЖИВОТНЫХ: ВОСПРИЯТИЕ ВНЕШНИХ СТИМУЛОВ, ДВИГАТЕЛЬНАЯ АКТИВНОСТЬ, ОБУЧЕНИЕ И ПАМЯТЬ
URL: https://ogarev-online.ru/0044-4677/article/view/136079
DOI: https://doi.org/10.31857/S0044467723010100
EDN: https://elibrary.ru/GJNJQX
ID: 136079

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Abstract
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Abstract

The decisive role of sensory input in the initiation and modulation of locomotion has been shown repeatedly. One way to explore this input is the “split” treadmill paradigm. In the present study, a comparative analysis of the walking of a decerebrate cat on a split treadmill was carried out, the belts of which moved not only at different speeds (differed by 3 times), but also in different directions (forward and backward). The reciprocal work of two limbs, as well as the flexor and extensor muscles of each limb, is shown in such a locomotor mode. Two main walking strategies were identified: in response to one step of the limb walking along the slow treadmill belt, the limb walking along the fast belt made either one (1 : 1 mode) or two steps (1 : 2); strategies could interchange. The results of the study suggest the preservation of the integration of the locomotor networks of the two limbs with a significant mismatch of their sensory inputs.

Keywords

bidirectional walking, central pattern generator, split treadmill, spinal cord, decerebration

References

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