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Closed-Loop Control of Active Sensing Movements Regulates Sensory Slip.

Debojyoti Biswas, Luke A Arend, Sarah A Stamper, Balázs P Vágvölgyi, Eric S Fortune, View ORCID ProfileNoah J Cowan
doi: https://doi.org/10.1101/366609
Debojyoti Biswas
Johns Hopkins University;
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Luke A Arend
Johns Hopkins University;
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Sarah A Stamper
Johns Hopkins University;
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Balázs P Vágvölgyi
Johns Hopkins University;
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Eric S Fortune
New Jersey Institute of Technology
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Noah J Cowan
Johns Hopkins University;
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  • ORCID record for Noah J Cowan
  • For correspondence: ncowan@jhu.edu
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Abstract

Active sensing involves the production of motor signals for the purpose of acquiring sensory information. The most common form of active sensing, found across animal taxa and behaviors, involves the generation of movements e.g. whisking, touching, sniffing, and eye movements. Active-sensing movements profoundly affect the information carried by sensory feedback pathways and are modulated by both top-down goals (e.g. measuring weight vs. texture) and bottom-up stimuli (e.g. lights on/off) but it remains unclear if and how these movements are controlled in relation to the ongoing feedback they generate. To investigate the control of movements for active sensing, we created an experimental apparatus for freely swimming weakly electric fish, Eigenmannia virescens, that modulates the gain of reafferent feedback by adjusting the position of a refuge based on real time videographic measurements of fish position. We discovered that fish robustly regulate sensory slip via closed-loop control of active-sensing movements. Specifically, as fish performed the task of maintaining position inside the refuge, they dramatically up- or down-regulated fore-aft active-sensing movements in relation to a 4-fold change of experimentally modulated reafferent gain. These changes in swimming movements served to maintain a constant magnitude of sensory slip. The magnitude of sensory slip depended on the presence or absence of visual cues. These results indicate that fish use two controllers: one that controls the acquisition of information by regulating feedback from active sensing movements, and another that maintains position in the refuge, a control structure that may be ubiquitous in animals.

Footnotes

  • This version of the manuscript has been revised to update the following 1. Figure 2 2. Discussion section

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted November 07, 2018.
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Closed-Loop Control of Active Sensing Movements Regulates Sensory Slip.
Debojyoti Biswas, Luke A Arend, Sarah A Stamper, Balázs P Vágvölgyi, Eric S Fortune, Noah J Cowan
bioRxiv 366609; doi: https://doi.org/10.1101/366609
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Closed-Loop Control of Active Sensing Movements Regulates Sensory Slip.
Debojyoti Biswas, Luke A Arend, Sarah A Stamper, Balázs P Vágvölgyi, Eric S Fortune, Noah J Cowan
bioRxiv 366609; doi: https://doi.org/10.1101/366609

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  • Animal Behavior and Cognition
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