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Cognitive Science Department

Automatic control: the vertebral column of dogfish sharks behaves as a continuously variable transmission with smoothly shifting functions

Publication Date
2016-July-07
Document Type
Abstract

During swimming in dogfish sharks, Squalus acanthias, both the intervertebral joints and the vertebral centra undergo significant strain. To investigate this system, unique among vertebrates, we cyclically bent isolated segments of 10 vertebrae and nine joints….

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Built for speed: strain in the cartilaginous vertebral columns of sharks

Publication Date
2014-February-01
Document Type
Abstract

In most bony fishes vertebral column strain during locomotion is almost exclusively in the intervertebral joints, and when these joints move there is the potential to store and release strain energy. Since cartilaginous fishes have poorly mineralized vertebral centra, we...

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Testing biological hypotheses with embodied robots: adaptations, accidents, and by-products in the evolution of vertebrates

Publication Date
2014-November-12
Document Type
Abstract

Evolutionary robotics allows biologists to test hypotheses about extinct animals. In our case, we modeled some of the first vertebrates, jawless fishes, in order to study the evolution of the trait after which vertebrates are named: vertebrae. …

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