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The Effect of Expertise on Kinesthetic Motor Imagery of Complex Actions

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Abstract

The ability to mentally simulate an action by recalling the body sensations relative to the real execution is referred to as kinesthetic motor imagery (MI). Frontal and parietal motor-related brain regions are generally engaged during MI. The present study aimed to investigate the time course and neural correlates of complex action imagery and possible effects of expertise on the underlying action representation processes. Professional ballet dancers and controls were presented with effortful and effortless ballet steps and instructed to mentally reproduce each movement during EEG recording. Time-locked MI was associated with an Anterior Negativity (AN) component (400–550 ms) that was larger in dancers relative to controls. The AN was differentially modulated by the motor content (effort) as a function of ballet expertise. It was more negative in response to effortful (than effortless) movements in control participants only. This effect also had a frontal distribution in controls and a centro-parietal distribution in dancers, as shown by the topographic maps of the scalp voltage. The source reconstruction (swLORETA) of the recorded potentials in the AN time-window showed enhanced engagement of prefrontal regions in controls (BA 10/47) relative to dancers, and occipitotemporal (BA 20) and bilateral sensorimotor areas in dancers (BA6/40) compared with controls. This evidence seems to suggest that kinesthetic MI of complex action relied on visuomotor simulation processes in participants with acquired dance expertise. Simultaneously, increased cognitive demands occurred in participants lacking in motor knowledge with the specific action. Hence, professional dance training may lead to refined action representation processes.

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Acknowledgements

We are truly grateful to Tatiana Baroni for her technical support and to Silvia D’Incà for her precious help. Our thanks to all dancer and non-dancer volunteers who decided to take part in the investigation.

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Correspondence to Andrea Orlandi.

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The authors received no specific funding for this study.

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Handling Editor: Micah M. Murray.

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Orlandi, A., Arno, E. & Proverbio, A.M. The Effect of Expertise on Kinesthetic Motor Imagery of Complex Actions. Brain Topogr 33, 238–254 (2020). https://doi.org/10.1007/s10548-020-00760-x

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  • DOI: https://doi.org/10.1007/s10548-020-00760-x

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