Neural representations of kinematic laws of motion: Evidence for action-perception coupling

Eran Dayan, Antonino Casile, Nava Levit-Binnun, Martin A. Giese, Talma Hendler, Tamar Flash*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

123 Scopus citations


Behavioral and modeling studies have established that curved and drawing human hand movements obey the 2/3 power law, which dictates a strong coupling between movement curvature and velocity. Human motion perception seems to reflect this constraint. The functional MRI study reported here demonstrates that the brain's response to this law of motion is much stronger and more widespread than to other types of motion. Compliance with this law is reflected in the activation of a large network of brain areas subserving motor production, visual motion processing, and action observation functions. Hence, these results strongly support the notion of similar neural coding for motion perception and production. These findings suggest that cortical motion representations are optimally tuned to the kinematic and geometrical invariants characterizing biological actions.

Original languageEnglish
Pages (from-to)20582-20587
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number51
StatePublished - 18 Dec 2007


  • Functional MRI
  • Motion perception
  • Movement kinematics
  • Trajectory formation
  • Two-thirds power law


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