Effect of tool-use observation on metric body representation and peripersonal space

Galigani, Mattia; Castellani, Nicolò; Donno, Brunella; Franza, Matteo; Zuber, Charlène; Allet, Lara; Garbarini, Francesca; Bassolino, Michela

doi:10.1016/j.neuropsychologia.2020.107622

Cited by 24 publications

(27 citation statements)

References 89 publications

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“…To assess the implicit perceived dimension of the upper limbs, we adapted the BLT. 32 , 33 , 36 , 49 , 50 , 54 , 55 Participants had to verbally indicate when a moving marker reached the felt position of one of five possible non-visible anatomical landmarks that were: the tip of the index finger, the tip of the annular finger, the internal part of the wrist (the radius styloid), the external part of the wrist (the ulnar styloid) and the elbow joint (the olecranon) (see Supplementary material for further details and the Graphical abstract for a figure of the task). The width or length of the body parts was then computed a posteriori during the data analysis.…”

Section: Methodsmentioning

confidence: 99%

Body and peripersonal space representations in chronic stroke patients with upper limb motor deficits

Bassolino

Franza

Guanziroli

et al. 2022

Brain Communications

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The continuous stream of multisensory information between the brain and the body during body–environment interactions is crucial to maintain the updated representation of the perceived dimensions of body parts (metric body representation) and the space around the body (the peripersonal space). Such flow of multisensory signals is often limited by upper limb sensorimotor deficits after stroke. This would suggest the presence of systematic distortions of metric body representation and peripersonal space in chronic patients with persistent sensorimotor deficits. We assessed metric body representation and peripersonal space representation in 60 chronic stroke patients with unilateral upper limb motor deficits, in comparison with age-matched healthy controls. We also administered a questionnaire capturing explicit feelings towards the affected limb. These novel measures were analysed with respect to patients’ clinical profiles and brain lesions to investigate the neural and functional origin of putative deficits. Stroke patients showed distortions in metric body representation of the affected limb, characterized by an underestimation of the arm length and an alteration of the arm global shape. A descriptive lesion analysis (subtraction analysis) suggests that these distortions may be more frequently associated with lesions involving the superior corona radiata and the superior frontal gyrus. Peripersonal space representation was also altered, with reduced multisensory facilitation for stimuli presented around the affected limb. These deficits were more common in patients reporting pain during motion. Explorative lesion analyses (subtraction analysis, disconnection maps) suggest that the peripersonal space distortions would be more frequently associated with lesions involving the parietal operculum and white matter frontoparietal connections. Moreover, patients reported altered feelings towards the affected limb, which were associated with right brain damage, proprioceptive deficits and a lower cognitive profile. These results reveal implicit and explicit distortions involving metric body representation, peripersonal space representation and the perception of the affected limb in chronic stroke patients. These findings might have important clinical implications for the longitudinal monitoring and the treatments of often-neglected deficits in body perception and representation.

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Section: Methodsmentioning

confidence: 99%

Body and peripersonal space representations in chronic stroke patients with upper limb motor deficits

Bassolino

Franza

Guanziroli

et al. 2022

Brain Communications

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“…Experimental evidence has shown that the body schema [120] and the peripersonal space [102] (for reviews see [76,97]) can be temporarily remapped during active or passive interaction [121] with a tool. This phenomenon was originally observed in monkeys [1] (for a review see [7]), and was later described in brain damaged [8,122] and healthy humans [2,5,120,[123][124][125]. It has been suggested that modifications of the PPS underlying these effects depend on Hebbian plasticity [126][127][128], i.e., connectivity transformations driven by statistical associations of multisensory inputs from the environment.…”

Section: Incorporating Tools In the Ppsmentioning

confidence: 89%

“…The difference in reaction time in detecting a tactile stimulus on a body spot [11,12] when visual [2] or auditory stimuli [3][4][5]68] are presented on an incongruent location on the body.…”

Section: Crossmodal Congruency Effect (Cce)mentioning

confidence: 99%

“…The present perspective review aims at proposing that interpersonal interactions may affect (sensorimotor) body and (multisensory) peripersonal space (PPS) representations. This perspective is grounded on two established piece of evidence regarding the plasticity of body and PPS representations, namely: (1) that synchronous visuo-tactile stimulation applied on ones' own body and a fake ("rubber" or virtual) body part can induce changes in body representations, leading to the incorporation (i.e., feeling of ownership, proprioceptive drift, self-location drift) of the rubber body part in one's own body representation (see Table 1); (2) that active tool use modulates the PPS by strengthening multisensory integration effects between visual [1,2] or auditory [3][4][5] stimuli delivered near the tool and tactile stimulation applied on the body, respectively, thus leading to the incorporation of the tool in the representation of the body of the user [2,[6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Interpersonal Motor Interactions Shape Multisensory Representations of the Peripersonal Space

2021

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This perspective review focuses on the proposal that predictive multisensory integration occurring in one’s peripersonal space (PPS) supports individuals’ ability to efficiently interact with others, and that integrating sensorimotor signals from the interacting partners leads to the emergence of a shared representation of the PPS. To support this proposal, we first introduce the features of body and PPS representations that are relevant for interpersonal motor interactions. Then, we highlight the role of action planning and execution on the dynamic expansion of the PPS. We continue by presenting evidence of PPS modulations after tool use and review studies suggesting that PPS expansions may be accounted for by Bayesian sensory filtering through predictive coding. In the central section, we describe how this conceptual framework can be used to explain the mechanisms through which the PPS may be modulated by the actions of our interaction partner, in order to facilitate interpersonal coordination. Last, we discuss how this proposal may support recent evidence concerning PPS rigidity in Autism Spectrum Disorder (ASD) and its possible relatioship with ASD individuals’ difficulties during interpersonal coordination. Future studies will need to clarify the mechanisms and neural underpinning of these dynamic, interpersonal modulations of the PPS.

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“…Stimuli were displayed using E‐Prime V2.0 software (Psychology Software Tools Inc.) at the center of a 21‐inch Sony CRT computer screen. Visual stimuli consisted of four schematic configurations containing three red dots (4 cm in diameter) on a black background and differed only for the spatial arrangement of the dots (Figure 1a; Buiatti et al., 2019; Galigani, Castellani, et al, 2020; Reid et al., 2017; Ronga et al., 2018). In the face‐like stimulus, the dots composed a downward pointing triangle, and they were placed in the appropriate location for the eyes and the mouth to form an upright (canonical) face‐like pattern resembling a schematic human face (henceforth referred to as the “Upright” configuration).…”

Section: Methodsmentioning

confidence: 99%

Face‐like configurations modulate electrophysiological mismatch responses

Galigani

Ronga

Bruno

et al. 2021

Eur J of Neuroscience

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Human faces are one of the most salient stimuli in the environment since they convey important and complex information, including individual identity, race, gender, and emotional expression (Röder et al., 2013; Schweinberger & Neumann, 2016; Yankouskaya et al., 2012). Yet, more essential, structural attributes, like those depicted by basic facelike configurations, may convey the same salience elicited by real face visual features. Interestingly, newborns, and even fetuses, exhibit a visual preference for basic face-like configurations (Reid et al., 2017; Ronga et al., 2018). In line with this

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Effect of tool-use observation on metric body representation and peripersonal space

Cited by 24 publications

References 89 publications

Body and peripersonal space representations in chronic stroke patients with upper limb motor deficits

Body and peripersonal space representations in chronic stroke patients with upper limb motor deficits

Interpersonal Motor Interactions Shape Multisensory Representations of the Peripersonal Space

Face‐like configurations modulate electrophysiological mismatch responses

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