![]() All subjects successfully adjusted their movements to the constraint without an adaptation phase. Animals had to reach out through the hole toward a target, to retrieve a food reward and fetch it. Subjects ( N=6) were placed inside a transparent Perspex box with a hole at the center that allowed the insertion of a single arm. Our study is the first to manage to introduce a physical constraint to an octopus arm and investigate the adaptability of stereotypical bend propagation in reaching movements and the pseudo-limb articulation during fetching. ![]() ![]() The motor control of the eight highly flexible arms of the common octopus ( Octopus vulgaris) has been the focus of several recent studies.
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