The different impact of attention, movement and sensory information on body metric representation

Pietro Caggiano, Gianna Cocchini, Danila De Stefano, Daniele Romano

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Abstract

A growing body of research investigating the relationship between body representation and tool-use has shown that body representation is highly malleable. The nature of the body representation does not consist only of sensory attributes but also of motor action-oriented qualities, which may modulate the subjective experience of our own body. However, how these multisensory factors and integrations may specifically guide and constrain body reorientation’s plasticity has been under-investigated. In the present study, we used a forearm bisection task to selectively investigate the contribution of motor, sensory and attentional aspects in guiding body representation malleability. Results show that the perceived forearm midpoint deviates from the real one. This shift is further modulated by a motor task but not by a sensory task, whereas the attentional task generates more uncertain results. Our findings provide novel insight into the individual role of movement, somatosensation and attention in modulating body metric representation.
Original languageEnglish
Number of pages26
JournalQuarterly Journal of Experimental Psychology
Early online date29 Jun 2023
DOIs
Publication statusE-pub ahead of print - 29 Jun 2023

Keywords

  • Body representation
  • body schema
  • body image
  • body metric
  • Arm bisection task

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