Object manipulation without hands

Shoko Sugasawa*, Barbara Webb, Susan D. Healy

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

Our current understanding of manipulation is based on primate hands, resulting in a detailed but narrow perspective of ways to handle objects. Although most other animals lack hands, they are still capable of flexible manipulation of diverse objects, including food and nest materials, and depend on dexterity in object handling to survive and reproduce. Birds, for instance, use their bills and feet to forage and build nests, while insects carry food and construct nests with their mandibles and legs. Bird bills and insect mandibles are much simpler than a primate hand, resembling simple robotic grippers. A better understanding of manipulation in these and other species would provide a broader comparative perspective on the origins of dexterity. Here we contrast data from primates, birds and insects, describing how they sense and grasp objects, and the neural architectures that control manipulation. Finally, we outline techniques for collecting comparable manipulation data from animals with diverse morphologies and describe the practical applications of studying manipulation in a wide range of species, including providing inspiration for novel designs of robotic manipulators.

Original languageEnglish
Article number20203184
Number of pages7
JournalProceedings of the Royal Society B: Biological Sciences
Volume288
Issue number1947
Early online date17 Mar 2021
DOIs
Publication statusPublished - 31 Mar 2021

Keywords

  • dexterity
  • functional morphology
  • motor control
  • object manipulation
  • robot manipulation
  • sensory ecology

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