Variability in locomotor dynamics reveals the critical role of feedback in task control.

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10.7554:eLife.51219.pdf

Date

2020-01-23

Author

Uyanik, I
Sefati, S
Stamper, Sa
Cho, Ka
Ankaralı, Mustafa Mert
Fortune, Es
Cowan, Nj

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Animals vary considerably in size, shape, and physiological features across individuals, but yet achieve remarkably similar behavioral performances. We examined how animals compensate for morphophysiological variation by measuring the system dynamics of individual knifefish (Eigenmannia virescens) in a refuge tracking task. Kinematic measurements of Eigenmannia were used to generate individualized estimates of each fish's locomotor plant and controller, revealing substantial variability between fish. To test the impact of this variability on behavioral performance, these models were used to perform simulated 'brain transplants'-computationally swapping controllers and plants between individuals. We found that simulated closed-loop performance was robust to mismatch between plant and controller. This suggests that animals rely on feedback rather than precisely tuned neural controllers to compensate for morphophysiological variability.

Subject Keywords

General Biochemistry, Genetics and Molecular Biology, General Immunology and Microbiology, General Neuroscience, General Medicine

URI

https://hdl.handle.net/11511/49000

Journal

eLife

DOI

https://doi.org/10.7554/elife.51219

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Department of Electrical and Electronics Engineering, Article

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Citation Formats

I. Uyanik et al., “Variability in locomotor dynamics reveals the critical role of feedback in task control.,” eLife, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/49000.