Work

Asymmetric bilateral deficit and facilitation in maximal-speed bimanual finger coordination

Year: 2026

Type: article

Abstract: Bilateral coordination produces asymmetric, hand-specific effects rather than a uniform bilateral deficit. The dominant hand exhibited bilateral deficit, while the nondominant hand demonstrated facilitation during in-phase coordination. Unimanual frequency asymmetry and amplitude modulation differentially predicted these opposing effects, suggesting distinct hemispheric contributions to bimanual performance. An extended coupled oscillator model incorporating hand-specific natural frequencies successfully captured these asymmetric patterns through weighted frequency convergence and amplitude-dependent stability.

Source: Journal of Neurophysiology

DOI: 10.1152/jn.00326.2025

Authors: Kazumi Azuma-Takeshita, Kohei Miyata, Wataru Kurebayashi, Kazutoshi Kudo

Institutions: The University of Tokyo, The University of Osaka

Language: English

Topic: Motor Control and Adaptation

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

Open Access status: hybrid

Funder: Japan Society for the Promotion of Science

Awards: G2439333282, An integrated understanding of the neural and somatic basis of motor decision-making., G4261200119, G4561884299