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Is the Imitative Competence an Asymmetrically Distributed Function?

Mara Fabri¹, Chiara Pierpaoli², Nicoletta Foschi³

¹Department of Life and Environmental Sciences, Marche Polytechnic University, Ancona, Italy.

Frontiers in Systems Neuroscience

|January 10, 2022

Summary

Anatomical imitation and mental rotation skills require interhemispheric communication, primarily through the corpus callosum. This finding is based on studies of healthy individuals and split-brain patients.

Keywords:

anatomical perspective corpus callosum cortical activation imitation intransitive gestures mental rotation split-brain

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Area of Science:

Neuroscience
Cognitive Psychology
Neuroanatomy

Background:

Interhemispheric communication is crucial for complex cognitive functions.
The corpus callosum is the primary pathway for information transfer between brain hemispheres.

Purpose of the Study:

To re-evaluate behavioral and functional data on anatomical imitation (AI) and mental rotation (MR).
To investigate the role of interhemispheric connections, particularly the corpus callosum, in AI and MR competence.

Main Methods:

Analysis of existing behavioral and functional data.
Comparison of performance in healthy subjects with intact callosal connections versus split-brain patients with impaired callosal connections.

Main Results:

Both anatomical imitation and mental rotation competence significantly depend on interhemispheric communication.
Impaired callosal connections in split-brain patients markedly affect AI and MR abilities.

Conclusions:

Interhemispheric communication via the corpus callosum is essential for anatomical imitation and mental rotation.
These findings underscore the importance of the corpus callosum in higher-level cognitive functions.