Proprioceptive Bimanual Test in Intrinsic and Extrinsic Coordinates

Iandolo, Riccardo; Squeri, Valentina; Santis, Dalia De; Giannoni, Psiche; Morasso, Pietro; Casadio, Maura

doi:10.3389/fnhum.2015.00072

Cited by 16 publications

(8 citation statements)

References 58 publications

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“…Actually, the “cognitive” factor could affect the reliability of the JPS assessment, in the sense that the standard JPM paradigm implies a perceptual position memory of the tested subject. With patients this might be a problem and one might suggest to overcome the cognitive issue by using a bilateral version of the JMP task ( Iandolo et al, 2015 ). However, this solution may not always be feasible in clinical practice, particularly in patients with severe impairments.…”

Section: Discussionmentioning

confidence: 99%

Wrist Position Sense in Two Dimensions: Between-Hand Symmetry and Anisotropic Accuracy Across the Space

Albanese

Holmes

Marini

et al. 2021

Front. Hum. Neurosci.

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A deep investigation of proprioceptive processes is necessary to understand the relationship between sensory afferent inputs and motor outcomes. In this work, we investigate whether and how perception of wrist position is influenced by the direction along which the movement occurs. Most previous studies have tested Joint Position Sense (JPS) through 1 degree of freedom (DoF) wrist movements, such as flexion/extension (FE) or radial/ulnar deviation (RUD). However, the wrist joint has 3-DoF and many activities of daily living produce combined movements, requiring at least 2-DoF wrist coordination. For this reason, in this study, target positions involved movement directions that combined wrist flexion or extension with radial or ulnar deviation. The chosen task was a robot-aided Joint Position Matching (JPM), in which blindfolded participants actively reproduced a previously passively assumed target joint configuration. The JPM performance of 20 healthy participants was quantified through measures of accuracy and precision, in terms of both perceived target direction and distance along each direction of movement. Twelve different directions of movement were selected and both hands tested. The left and right hand led to comparable results, both target extents and directions were differently perceived according to the target direction on the FE/RUD space. Moreover, during 2-DoF combined movements, subjects’ perception of directions was impaired when compared to 1-DoF target movements. In summary, our results showed that human perception of wrist position on the FE/RUD space is symmetric between hands but not isotropic among movement directions.

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Section: Discussionmentioning

confidence: 99%

Wrist Position Sense in Two Dimensions: Between-Hand Symmetry and Anisotropic Accuracy Across the Space

Albanese

Holmes

Marini

et al. 2021

Front. Hum. Neurosci.

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“…So that for the ith response to a target, t, the error Err t,i ϭ t,i Ϫ ⌰ t . To focus the analyses on the effect of the sensory conflict, we first corrected for any global rotation of responses that might occur due to possible Muller or Aubert effects (for review, see Howard 1982), independent from the tilt of the visual scene in the conflict situation. To this end, we subtracted the global response Bias after left head tilts without sensory conflict, from all Err values for trials performed with the head tilted to the left (with and without conflict), and the same was done for the trials with right head tilts, on a subject-by-subject basis.…”

Section: Methodsmentioning

confidence: 99%

The visual encoding of purely proprioceptive intermanual tasks is due to the need of transforming joint signals, not to their interhemispheric transfer

Fromentin

Farotto

Beraneck

et al. 2017

Journal of Neurophysiology

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To perform goal-oriented hand movement, humans combine multiple sensory signals (e.g., vision and proprioception) that can be encoded in various reference frames (body centered and/or exo-centered). In a previous study (Tagliabue M, McIntyre J. 8: e68438, 2013), we showed that, when aligning a hand to a remembered target orientation, the brain encodes both target and response in visual space when the target is sensed by one hand and the response is performed by the other, even though both are sensed only through proprioception. Here we ask whether such visual encoding is due) to the necessity of transferring sensory information across the brain hemispheres, or ) to the necessity, due to the arms' anatomical mirror symmetry, of transforming the joint signals of one limb into the reference frame of the other. To answer this question, we asked subjects to perform purely proprioceptive tasks in different conditions: Intra, the same arm sensing the target and performing the movement; Inter/Parallel, one arm sensing the target and the other reproducing its orientation; and Inter/Mirror, one arm sensing the target and the other mirroring its orientation. Performance was very similar between Intra and Inter/Mirror (conditions not requiring joint-signal transformations), while both differed from Inter/Parallel. Manipulation of the visual scene in a virtual reality paradigm showed visual encoding of proprioceptive information only in the latter condition. These results suggest that the visual encoding of purely proprioceptive tasks is not due to interhemispheric transfer of the proprioceptive information per se, but to the necessity of transforming joint signals between mirror-symmetric limbs. Why does the brain encode goal-oriented, intermanual tasks in a visual space, even in the absence of visual feedback about the target and the hand? We show that the visual encoding is not due to the transfer of proprioceptive signals between brain hemispheres per se, but to the need, due to the mirror symmetry of the two limbs, of transforming joint angle signals of one arm in different joint signals of the other.

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“…During a bimanual task, the reliability of a given sensory channel determines its influence on proprioception, such that the least reliable input is sometimes discarded completely 5,24,25,51,56 .…”

Section: Manuscript Intrmentioning

confidence: 99%

A Novel Finger Illusion Reveals Reduced Weighting of Bimanual Hand Cortical Representations in People With Complex Regional Pain Syndrome

Wang

Butler

Valentine

et al. 2019

The Journal of Pain

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Complex regional pain syndrome (CRPS) is associated with deficits in sensorimotor control. Herein we have used a novel finger illusion to investigate whether CRPS is associated with reduced weighting of bimanual hand representations. The illusion normally induces a compelling feeling that the hands are close together when in fact they are 12 cm apart. People with CRPS and age, gender, and dominant hand-matched controls tested the illusion in the midline then on either side of the midline. The illusion had 2 variants; the passive pincer-grip position, without contact (no grasp condition) and with contact (grasp condition) of the artificial finger. The primary outcome was the perceived vertical distance between the index fingers. Twenty people with CRPS and 20 controls participated (mean age 44.4 ± 11.7 years). During the no grasp condition, participants with CRPS perceived the vertical distance significantly closer to the actual 12 cm (mean 8.0 cm, 95% confidence interval 6.5-9.5 cm), than controls did (mean 6.4 cm, 95% confidence interval 5.5-7.2 cm]). That is, the illusion was weaker in people with CRPS than in controls during no grasp. There was no such difference during grasp; that is, both groups showed the predicted illusion response. There was no effect of hand placement relative to midline or relative to the opposite hand. We conclude that people with unilateral CRPS have lower weighting of bimanual hand representation than controls have, independent of hand location. However, adding additional cutaneous input returns those with CRPS to the expected performance. We suggest the results have clear clinical and research implications. PERSPECTIVE: An abnormal weighting of bilateral hand representation may reflect a vulnerability for chronic CRPS, an adaptation to the disease, and/or a potential therapeutic target. That addition of cutaneous input immediately normalizes the problem points to the possible role of bimanual tasks in prevention or rehabilitation.

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Proprioceptive Bimanual Test in Intrinsic and Extrinsic Coordinates

Cited by 16 publications

References 58 publications

Wrist Position Sense in Two Dimensions: Between-Hand Symmetry and Anisotropic Accuracy Across the Space

Wrist Position Sense in Two Dimensions: Between-Hand Symmetry and Anisotropic Accuracy Across the Space

The visual encoding of purely proprioceptive intermanual tasks is due to the need of transforming joint signals, not to their interhemispheric transfer

A Novel Finger Illusion Reveals Reduced Weighting of Bimanual Hand Cortical Representations in People With Complex Regional Pain Syndrome

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