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Here, we address the issue of motor variability during voluntary movements by applying an unsupervised clustering algorithm to group movement elements according to their morphological characteristics. We observed that most movement elements closely match the theoretical bell-shaped velocity profile expected from goal-directed movements. However, for those movement elements that deviate from this theoretical shape, a small number of defined patterns in their shape can be identified. Furthermore, we observed that the axis of the body from which the movement elements are extracted (i.e., medio-lateral, antero-posterior, and vertical) affect the proportion of the movement elements matching the theoretical model. These results provide novel insight into how the nervous system controls voluntary movements and may use variability in movement element properties to explore the environment.<\/jats:p>","DOI":"10.3389\/fnhum.2023.1278653","type":"journal-article","created":{"date-parts":[[2023,11,28]],"date-time":"2023-11-28T05:54:43Z","timestamp":1701150883000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Understanding voluntary human movement variability through data-driven segmentation and clustering"],"prefix":"10.3389","volume":"17","author":[{"given":"Jean-Francois","family":"Daneault","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brandon","family":"Oubre","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose Garcia Vivas","family":"Miranda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sunghoon Ivan","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2023,11,28]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"157","DOI":"10.1016\/j.visres.2017.03.001","article-title":"Individual differences in human eye movements: An oculomotor signature?","volume":"141","author":"Bargary","year":"2017","journal-title":"Vision Res."},{"key":"B2","doi-asserted-by":"publisher","first-page":"1056","DOI":"10.1523\/JNEUROSCI.1921-15.2016","article-title":"Why don\u2019t we move slower? 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