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Mechanisms of octopus arm search behavior without visual feedback.
Sivitilli, Dominic M; Strong, Terrell; Weertman, Willem; Ullmann, Joseph; Smith, Joshua R; Gire, David H.
Afiliação
  • Sivitilli DM; Department of Psychology, University of Washington, Seattle, WA, United States of America.
  • Strong T; Astrobiology Program, University of Washington, Seattle, WA, United States of America.
  • Weertman W; Paul G. Allen School of Computer Science & Engineering, University of Washington, Seattle, WA, United States of America.
  • Ullmann J; Department of Psychology, University of Washington, Seattle, WA, United States of America.
  • Smith JR; Friday Harbor Laboratories, University of Washington, Seattle, WA, United States of America.
  • Gire DH; Paul G. Allen School of Computer Science & Engineering, University of Washington, Seattle, WA, United States of America.
Bioinspir Biomim ; 18(6)2023 10 30.
Article em En | MEDLINE | ID: mdl-37793413
The octopus coordinates multiple, highly flexible arms with the support of a complex distributed nervous system. The octopus's suckers, staggered along each arm, are employed in a wide range of behaviors. Many of these behaviors, such as foraging in visually occluded spaces, are executed under conditions of limited or absent visual feedback. In coordinating unseen limbs with seemingly infinite degrees of freedom across a variety of adaptive behaviors, the octopus appears to have solved a significant control problem facing the field of soft-bodied robotics. To study the strategies that the octopus uses to find and capture prey within unseen spaces, we designed and 3D printed visually occluded foraging tasks and tracked arm motion as the octopus attempted to find and retrieve a food reward. By varying the location of the food reward within these tasks, we can characterize how the arms and suckers adapt to their environment to find and capture prey. We compared these results to simulated experimental conditions performed by a model octopus arm to isolate the primary mechanisms driving our experimental observations. We found that the octopus relies on a contact-based search strategy that emerges from local sucker coordination to simplify the control of its soft, highly flexible limbs.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Octopodiformes Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Octopodiformes Idioma: En Ano de publicação: 2023 Tipo de documento: Article