Emergence of rhythmic chunking in complex stepping of mice
Summary: Motor chunking is important for motor execution, allowing atomization and efficiency of movement sequences. However, it remains unclear why and how chunks contribute to motor execution. To analyze the structure of naturally occurring chunks, we trained mice to run in a complex series of ste...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223008428 |
| _version_ | 1797829515481710592 |
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| author | Kojiro Hirokane Toru Nakamura Yasuo Kubota Dan Hu Takeshi Yagi Ann M. Graybiel Takashi Kitsukawa |
| author_facet | Kojiro Hirokane Toru Nakamura Yasuo Kubota Dan Hu Takeshi Yagi Ann M. Graybiel Takashi Kitsukawa |
| author_sort | Kojiro Hirokane |
| collection | DOAJ |
| description | Summary: Motor chunking is important for motor execution, allowing atomization and efficiency of movement sequences. However, it remains unclear why and how chunks contribute to motor execution. To analyze the structure of naturally occurring chunks, we trained mice to run in a complex series of steps and identified the formation of chunks. We found that intervals (cycle) and the positional relationship between the left and right limbs (phase) of steps inside the chunks, unlike those outside the chunks, were consistent across occurrences. Further, licking by the mice was also more periodic and linked to the specific phases of limb movements within the chunk. Based on these findings, we propose the rhythm chunking hypothesis, whereby within chunks, the repetitive movements of many body parts are linked by the rhythm parameters: cycle and phase. The computational complexity of movement may thereby be reduced by adjusting movements as the combination of rhythms. |
| first_indexed | 2024-04-09T13:22:25Z |
| format | Article |
| id | doaj.art-dd42b2a2fc514d9c8b2c7d5e4028f890 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-04-09T13:22:25Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-dd42b2a2fc514d9c8b2c7d5e4028f8902023-05-11T04:24:36ZengElsevieriScience2589-00422023-05-01265106765Emergence of rhythmic chunking in complex stepping of miceKojiro Hirokane0Toru Nakamura1Yasuo Kubota2Dan Hu3Takeshi Yagi4Ann M. Graybiel5Takashi Kitsukawa6Graduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan; Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanGraduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanMcGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USAMcGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USAGraduate School of Frontier Biosciences, Osaka University, Suita, Osaka, JapanMcGovern Institute for Brain Research and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USAGraduate School of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan; Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, Japan; Corresponding authorSummary: Motor chunking is important for motor execution, allowing atomization and efficiency of movement sequences. However, it remains unclear why and how chunks contribute to motor execution. To analyze the structure of naturally occurring chunks, we trained mice to run in a complex series of steps and identified the formation of chunks. We found that intervals (cycle) and the positional relationship between the left and right limbs (phase) of steps inside the chunks, unlike those outside the chunks, were consistent across occurrences. Further, licking by the mice was also more periodic and linked to the specific phases of limb movements within the chunk. Based on these findings, we propose the rhythm chunking hypothesis, whereby within chunks, the repetitive movements of many body parts are linked by the rhythm parameters: cycle and phase. The computational complexity of movement may thereby be reduced by adjusting movements as the combination of rhythms.http://www.sciencedirect.com/science/article/pii/S2589004223008428NeuroscienceBehavioral neuroscienceCognitive neuroscience |
| spellingShingle | Kojiro Hirokane Toru Nakamura Yasuo Kubota Dan Hu Takeshi Yagi Ann M. Graybiel Takashi Kitsukawa Emergence of rhythmic chunking in complex stepping of mice iScience Neuroscience Behavioral neuroscience Cognitive neuroscience |
| title | Emergence of rhythmic chunking in complex stepping of mice |
| title_full | Emergence of rhythmic chunking in complex stepping of mice |
| title_fullStr | Emergence of rhythmic chunking in complex stepping of mice |
| title_full_unstemmed | Emergence of rhythmic chunking in complex stepping of mice |
| title_short | Emergence of rhythmic chunking in complex stepping of mice |
| title_sort | emergence of rhythmic chunking in complex stepping of mice |
| topic | Neuroscience Behavioral neuroscience Cognitive neuroscience |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223008428 |
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