Abstract
In this study, whether pill bugs produce turn alternation, i.e., the tendency to turn in the opposite direction of a preceding turn, under obstacle-free conditions was investigated by movement measurements using an omnidirectional motion compensator ANTAM. The results showed that turn alternation was observed at the microscopic observation level (sampling frequency 10 Hz). On the other hand, repeated turns in the same direction were observed more often than turn alternations at the macroscopic observation level (1 Hz). These results suggest that under obstacle-free conditions, the pill bug moves in a microscopic left–right and macroscopic arc, and that it has at least two turn control mechanisms.
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Acknowledgements
ANTAM was manufactured by Dr Fujisawa of the Kyushu Institute of Technology and his students at the Hachinohe Institute of Technology and was loaned free of charge. Dr Fujisawa, Dr Nagaya of Kyoto Sangyo University, and the students in their laboratory provided very careful guidance in the use, repair of the instrument and analysis of its records. This work was partly supported by JSPS 21K12009.
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Fukai, K., Ogai, Y., Shinohara, S. et al. Evaluation of turn alternation in pill bugs using omnidirectional motion compensator ANTAM. Artif Life Robotics 27, 770–776 (2022). https://doi.org/10.1007/s10015-022-00802-6
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DOI: https://doi.org/10.1007/s10015-022-00802-6