Motor awareness: a model based on neurological syndromes

Pacella, Valentina; Moro, Valentina

doi:10.1007/s00429-022-02558-y

Cited by 6 publications

(2 citation statements)

References 148 publications

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“…Important individual differences in performance can exist within groups when looking at differences in motor awareness (Besharati et al, 2022;D'Imperio et al, 2017;Marcel et al, 2004;Pacella et al, 2022) between experimental conditions or ToM tasks (Besharati et al, 2016). These individual differences can be masked by group level analysis.…”

Section: Individual-level Analysismentioning

confidence: 99%

What I think she thinks about my body: Social inferences about disability-related content in anosognosia for hemiplegia

Besharati,

Jenkinson,

Kopelman

et al. 2024

Preprint

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The neuropsychological disorder of anosognosia for hemiplegia (AHP) can offer unique insights into the neurocognitive processes of body consciousness and representation. Previous studies have found associations between selective social cognition deficits and anosognosia. In this study, we examine how such social cognition deficits may directly interact with representations of one’s body as disabled in AHP. To this end, we modified a set of previously validated Theory of Mind stories to create content that was related to post-stroke paralysis and to investigate differences between right hemisphere damage patients with (n = 19) and without (n = 19) AHP. We expected AHP patients to perform worse than controls when trying to infer paralysis-related mental states, and explored whether such differences further depended on the kind of inference patients were asked to perform (e.g. from a first versus a third person perspective). Using an advanced structural neuroimaging technique, we expected selective social cognitive deficits to be associated with posterior parietal cortex lesions, and the difficulty to associate self -beliefs with paralysis during mentalising to be associated with frontoparietal disconnections. Group and individual level results revealed that AHP patients performed worse than HP controls when trying to infer paralysis-related mental states, possibly driven by both social cognition deficits per se and more specific difficulties to take the perspective of paralysed individual. Lesion analyses results were significant only at exploratory levels, revealing some of the hypothesised lesions but also unexpected white matter disconnections in the posterior body and splenium of the corpus collosum as related to deficits-related self-referent perspective taking. The study has implications for the multi-layered nature of body awareness, including abstract, social perspectives and beliefs about the body.

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Section: Individual-level Analysismentioning

confidence: 99%

What I think she thinks about my body: Social inferences about disability-related content in anosognosia for hemiplegia

Besharati,

Jenkinson,

Kopelman

et al. 2024

Preprint

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“…However, this question was not considered in the final score because of difficulties categorizing responses that did not provide sensory-specific information, which were the focus of the current study. Kinaesthetic sensations were not included in this assessment, as these represent feelings associated with motor awareness (Moro et al, 2021;Pacella and Moro, 2022;Beccherle et al, 2023) rather than with body ownership.…”

Section: Self-reported Somatosensory Sensationsmentioning

confidence: 99%

Examining the role of self-reported somatosensory sensations in body (dis)ownership: a scoping review and empirical study of patients with a disturbed sense of limb ownership.

Moro¹,

Scandola²,

Gobbetto³

et al. 2023

Preprint

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Patients with a disturbed sense of body ownership (DSO) offer a unique window of insight into the multisensory processes contributing to the sense of body ownership. A limited amount of past research has examined the role of sensory deficits in DSO, and even less is known regarding the role of patient self-reported somatosensory sensations in the pathogenesis of DSO. To address this lack of knowledge we conducted a systematic scoping review following PRISMA-SR guidelines, examining current research into somatosensory deficits and patient self-reported somatosensory sensations in patients with DSO. We identified 79 studies including 276 DSO patients, where the assessment of sensory deficits was generally limited in scope and quality, and deficits in tactile sensitivity and proprioception were most frequently found. The assessment and reporting of self-reported somatosensory sensations was even less frequent, with instances of parasthesia (pins-and-needles), stiffness/rigidity, numbness and warmth, coldness and heaviness amongst the deficits recorded. In a second empirical study we sought to directly address the lack of evidence concerning patient self-reported somatosensory sensations, by developing two questionnaires focused on: 1) a new and sensitive assessment of DSO (the Disturbed Sense of Ownership Questionnaire), and 2) a Somatosensory Sensations Questionnaire which assesses a wide range of patient-reported sensations. We applied these two new measures to a large (n = 121) sample of right-hemisphere stroke patients including N = 65 with DSO and N = 56 hemiplegic controls. Using these novel measures, we found that DSO was associated with greater self-reported somatosensory sensations, including feelings of heaviness, stiffness, coldness and numbness. Our findings provide the first direct evidence of the impact of aberrant somatosensory sensations in DSO and suggest an important role for these subjective sensations about the felt body in the sense of body ownership.

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Brain disconnections refine the relationship between brain structure and function

Boes

Schotten

2022

Brain Struct Funct

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Motor awareness: a model based on neurological syndromes

Cited by 6 publications

References 148 publications

What I think she thinks about my body: Social inferences about disability-related content in anosognosia for hemiplegia

What I think she thinks about my body: Social inferences about disability-related content in anosognosia for hemiplegia

Examining the role of self-reported somatosensory sensations in body (dis)ownership: a scoping review and empirical study of patients with a disturbed sense of limb ownership.

Brain disconnections refine the relationship between brain structure and function

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