Recent studies have hypothesized that the stereotypical representation of the body may reflect some functional aspects of routine actions that are performed in specific peripersonal domains. For example, the lower and upper limbs tend to ‘act’ in different peripersonal spaces and perform different functions. The present study aims to directly investigate the relationship between body representation and the spatial context where actions are performed. By means of a modified version of the body image task, we investigated body representation before and after a sorting task training in two groups of participants who were asked to carry out the same task/actions in two different spaces: on a table or on the floor, while sitting on a chair. Findings showed that a significant recalibration of the perceived upper arms’ length occurred when participants were asked to perform a motor task on the floor. These results seem to suggest that the modulation of the body representation reflects an increase action capabilities driven by the contribution of motor training, and importantly, the location in which the action occurs. Furthermore, the modulation was not limited to the body part actively involved in the action (the arms), it extended to other upper body parts (the torso) to maintain, we propose, a functionally coherent representation of the upper body.
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Data availability statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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The authors would like to thank Guido Orgs for his valuable input in the initial phase of the study.
Conflict of interest
The authors declare that they have no conflict of interest.
All participants completed an informed consent form before performing the experiments. The study was approved by the Goldsmiths Ethics Committee and it was carried out in accordance with the Declaration of Helsinki (BMJ 1991; 302: 1194).
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Communicated by Francesca Frassinetti.
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Caggiano, P., Bertone, E. & Cocchini, G. Same action in different spatial locations induces selective modulation of body metric representation. Exp Brain Res 239, 2509–2518 (2021). https://doi.org/10.1007/s00221-021-06135-3
- Body metric representation
- Body image
- Body schema
- Spatial location