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However, while this effect has been consistently observed in the fast tempo range (133\u2013201\u00a0bpm), previous studies investigating the slow tempo range (e.g., 40\u2013104\u00a0bpm) have failed to find a reliable effect, reporting null or contradictory findings. The present study investigated whether a spatial association exists in the slow tempo range when specific methodological limitations (i.e. excessive gaps between stimuli) are addressed. Specifically, the study aimed to increase stimulus density through two complementary approaches: (1) testing the \u201cabsolute gap hypothesis\u201d by using a physically linear scale with reduced intervals (\u201cphysical linearity condition\u201d), and (2) testing the \u201cproportional gap hypothesis\u201d by using a perceptually linear scale based on Weber\u2019s Law (\u201cperceptual linearity condition\u201d). The results revealed a significant spatial association in both conditions, demonstrating that a denser set of stimuli facilitates the emergence of spatial mappings regardless of the scaling method. These findings demonstrate that ensuring temporal continuity through increased stimulus density reveals a robust spatial association in the slow tempo range, thereby supporting a unified mechanism for temporal processing consistent with a generalized magnitude system.<\/jats:p>","DOI":"10.1038\/s41598-026-49193-9","type":"journal-article","created":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T18:07:44Z","timestamp":1777399664000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Spatial associations for slow musical tempos are revealed by increased stimulus density"],"prefix":"10.1038","volume":"16","author":[{"given":"Alberto","family":"Mariconda","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Valter","family":"Prpic","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matteo","family":"De Tommaso","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mauro","family":"Murgia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,4,28]]},"reference":[{"key":"49193_CR1","doi-asserted-by":"publisher","first-page":"2765","DOI":"10.3758\/s13414-019-01945-8","volume":"82","author":"M De Tommaso","year":"2020","unstructured":"De Tommaso, M. & Prpic, V. 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