Disturbances of spatial reference frame and postural asymmetry after a chronic stroke

Jamal, Karim; Leplaideur, Stéphanie; Rousseau, Chloé; Chochina, Lucie; Raillon, Annelise Moulinet

doi:10.1016/j.rehab.2018.05.473

Cited by 3 publications

(3 citation statements)

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“…The number of repetitions in these assessments ranged from 6-10 times, and the authors explained that half of the repetitions were in the counterclockwise direction and the other half in the clockwise direction 1,15,16,[18][19][20]23,26,28 . We can also highlight that the movement speed of the light in the SVV test ranged from 1 to 5°/s 28,31 .…”

Section: Subjective Visual Verticalmentioning

confidence: 99%

Evaluation of subjective vertical perception among stroke patients: a systematic review

Ferreira

Campos

et al. 2021

Arq. Neuro-Psiquiatr.

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Background: Verticality misperception is relatively common among patients after stroke, and it may be evaluated in terms of (a) subjective visual vertical (SVV), (b) subjective haptic vertical (SHV) and (c) subjective postural vertical (SPV). To better understand these assessment methods, we conducted a systematic review of the methodological characteristics of different protocols for evaluating SVV, SHV and SPV among individuals after stroke. Objective: To standardize the methodological characteristics of protocols for evaluating verticality perception after stroke. Methods: We searched the following databases: PUBMED, regional BVS portal (MEDLINE, LILACS, IBECS, CUBMED, Psychology Index and LIS), CINAHL, SCOPUS, Web of Science, Science Direct, Cochrane Library and PEDro. Two review authors independently used the QUADAS method (Quality Assessment of Diagnostic Accuracy Studies) and extracted data. Results: We included 21 studies in the review: most (80.9%) used SVV, eight (38.1%) used SPV and four (19.0%) used SHV. We observed high variability in assessments of verticality perception, due to patient positions, devices used, numbers of repetitions and angle of inclination for starting the tests. Conclusion: This systematic review was one of the first to explore all the methods of assessing verticality perception after stroke, and it provides crucial information on how to perform the tests, in order to guide future researchers/clinicians.

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Section: Subjective Visual Verticalmentioning

confidence: 99%

Evaluation of subjective vertical perception among stroke patients: a systematic review

Ferreira

Campos

et al. 2021

Arq. Neuro-Psiquiatr.

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“…Patients with right brain damage (RBD) have a poorer prognosis than those with left brain damage (LBD) in terms of balance and therefore take a longer time to recover their balance [11,12]. As a result, WBA and BS parameters have been found to be different between these two populations [11,13,14]. Consequently, distinct MDC thresholds need to be determined depending on the side of the brain lesion, along with their reliability.…”

Section: Introductionmentioning

confidence: 99%

Reliability and minimal detectable change of body-weight distribution and body sway between right and left brain-damaged patients at a chronic stage

Jamal

Cordillet²,

Leplaideur

et al. 2022

Disability and Rehabilitation

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“…Traumatic brain injury (TBI) causes structural damage to multiple brain regions leading to sensorimotor impairments such as muscle weakness, spasticity and contractions (Feldman & Levin, 2016;Jamal, Leplaideur, Rousseau, Chochina, Moulinet-Raillon & Bonan, 2018;Roelofs, van Heugten, de Kam, Weerdesteyn & Geurts, 2018;Wilson et al, 2017). A unilateral TBI of cortical and subcortical structures often result in the formation of postural asymmetry with contralateral motor deficits including hemiplegia and hemiparesis (Jamal, Leplaideur, Rousseau, Chochina, Moulinet-Raillon & Bonan, 2018;Roelofs, van Heugten, de Kam, Weerdesteyn & Geurts, 2018;Wilson et al, 2017). Motor impairment on the affected side contributes to dynamic control asymmetry in favor of the less affected leg, weight-bearing asymmetry and impaired body sway control.…”

Section: Introductionmentioning

confidence: 99%

Hindlimb postural asymmetry induced by a unilateral brain trauma: a novel spinal opioid mechanism

Watanabe¹,

Nosova²,

Sarkisyan³

et al.

Authorea

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BACKGROUND AND PURPOSE Motor deficits after traumatic brain injury (TBI) remain poorly understood. In animals, a localized unilateral brain injury produces hindlimb postural asymmetry (HL-PA) that correlates with contralesional motor impairment. Here we evaluate if a unilateral injury to the sensorimotor cortex by the controlled cortical impact (CCI), a model of clinical focal TBI induces HL-PA in rats, and if this asymmetry is spinally encoded and mediated by the opioid system. EXPERIMENTAL APPROACH HL-PA was assessed after the right-side CCI as difference in limb position. Effects of general opioid antagonist naloxone and selective μ-(β-Funaltrexamine), δ-(naltrindole) and κ-(nor-Binaltorphimine and [(S)-3-fluoro-4-(4-((2-(3-fluorophenyl)pyrrolidin-1-yl)methyl)phenoxy)benzamide]) antagonists on HL-PA were analyzed before and after complete spinal cord transection. HL-PA induced by κ-agonist U50,488H and spinal expression of opioid receptor genes were studied in intact animals. KEY RESULTS The right-side CCI induced HL-PA with contralesional (left) flexion that retained after spinalization. Naloxone and μ-Funaltrexamine but not naltrindole and κ-antagonists abolished HL-PA. Surprisingly, treatment with κ-antagonists resulted in the left-to-right reversal of the flexion side; not contra-(left) but ipsilesional (right) limb was flexed. Furthermore, κ-agonist induced HL-PA with left flexion, while expression of subtypes of opioid receptors and their proportion was different between the left and right lumbar spinal cord. CONCLUSIONS AND IMPLICATIONS We report that the focal TBI-induced HL-PA is encoded at the spinal level and mediated through opioid receptors. The side-specific effects may be induced through lateralized opioid receptors. These findings suggest that the TBI-induced asymmetric motor deficits may be pharmacologically corrected.

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Disturbances of spatial reference frame and postural asymmetry after a chronic stroke

Cited by 3 publications

References 0 publications

Evaluation of subjective vertical perception among stroke patients: a systematic review

Evaluation of subjective vertical perception among stroke patients: a systematic review

Reliability and minimal detectable change of body-weight distribution and body sway between right and left brain-damaged patients at a chronic stage

Hindlimb postural asymmetry induced by a unilateral brain trauma: a novel spinal opioid mechanism

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