Bigand, F., Bianco, R., Abalde, S. F., & Novembre, G. (2024). The geometry of interpersonal synchrony in human dance. Current Biology, 34(13), 3011–3019.e4. doi:10.1016/j.cub.2024.05.055. Open access, PMC11266842.

Read in full (NOTE-1093), with Figure 2 and the supplementary figures and tables.

Key takeaways

From the reading, NOTE-1093.

  • Drive and coupling manipulated apart. “We orthogonally manipulated musical input (whether participants were dancing to the same, synchronous music) and visual contact (whether participants could see their dancing partner).”
  • Both raise synchrony, in different components. “We find that both music and partners drive synchrony, but through distinct dance moves.” No movement showed an interaction between the two factors (Figure S2C).
  • Timing does not tell them apart. “when (unlike where) participants move does not reflect whether synchrony is established through music or partner vision.”
  • Where does. Four eigendirections classified the synchrony category “with 100% accuracy”; the periodicity model “confused 48% of the data associated with music-driven synchrony with partner-driven synchrony.”

Why this is here

The owner’s exchange “Framework Overview Request” (2026-10-23) asked for external results that satisfy the explanatory aims of the record’s proposed-study CASEs. This study bears on QUESTION-063, what measurement tells a shared external drive from coupling among members, and on the proposed study of the dancing couple, CASE-045. It runs the intervention QUESTION-063 asks for in a human collective (displace the shared drive, cut the coupling channel, each independently) and finds that a timing measure alone cannot see the difference. Filed as CASE-149, stated by THEORY-891.

It is not CASE-045’s study: the dancers were untrained, stood 2.5 m apart without touching, danced freely rather than a led partner dance, and the analysis estimates no direction of coupling.