Specific brain structures strengthen neural coupling during bilateral movements
Specific brain structures, such as the corpus callosum and hippocampal regions, play a critical causal role in linking and synchronizing neural activity across hemispheres during bilateral movements.
The retrieved literature clearly supports the claim that specific brain structures (like the corpus callosum and hippocampus) facilitate interhemispheric communication and functional coupling during bilateral or bimanual movements. Paper 2 shows hippocampal-sensorimotor connectivity during motor tasks, and Paper 6 establishes a causal link between posterior callosal connections and interhemispheric coherence during bimanual coordination. There are no papers refuting this anatomical and functional relationship.
Douglas D. Burman. Hippocampal connectivity with sensorimotor cortex during volitional finger movements I. Laterality and relationship to motor learning. 2018. https://doi.org/10.1101/479451
Paper 2 demonstrates that midlateral hippocampal structures exhibit bilateral functional connectivity with the sensorimotor cortex during volitional finger movements.
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Kang JU, Snyder LH, Mooshagian E. A causal role for the posterior corpus callosum in bimanual coordination.. 2026. https://doi.org/10.1073/pnas.2516541123
Paper 6 provides causal evidence that direct callosal connections in the posterior corpus callosum support temporal synchronization and interhemispheric coherence during bimanual movements.
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