The Contribution of Muscle Afferents to Keslesthesia Shown by Vibration Induced Illusionsof Movement and by the Effects of Paralysing Joint Afferents

Goodwin, Guy M.; McCloskey, D.I.; Matthews, P. B. C.

doi:10.1093/brain/95.4.705

Cited by 1,214 publications

(612 citation statements)

References 25 publications

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“…For example, Lackner's (1988) Pinocchio illusion relies on vibrating muscle tendons to trigger afferent signals to the brain that the muscle is lengthening. This produces corresponding illusions of movement and displacement (Goodwin, McCloskey, & Matthews, 1972). For example, vibrating the biceps tendon produces the illusion of elbow extension, while vibrating the triceps tendon produces the illusion of elbow flexion.…”

Section: Introductionmentioning

confidence: 99%

More than skin deep: Body representation beyond primary somatosensory cortex

2010

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The neural circuits underlying initial sensory processing of somatic information are relatively well understood. In contrast, the processes that go beyond primary somatosensation to create more abstract representations related to the body are less clear. In this review, we focus on two classes of higher-order processing beyond somatosensation. Somatoperception refers to the process of perceiving the body itself, and particularly of ensuring somatic perceptual constancy.We review three key elements of somatoperception: (a) remapping information from the body surface into an egocentric reference frame (b) exteroceptive perception of objects in the external world through their contact with the body and (c) interoceptive percepts about the nature and state of the body itself. Somatorepresentation, in contrast, refers to the essentially cognitive process of constructing semantic knowledge and attitudes about the body, including: (d) lexicalsemantic knowledge about bodies generally and one's own body specifically, (e) configural knowledge about the structure of bodies, (f) emotions and attitudes directed towards one's own body, and (g) the link between physical body and psychological self. We review a wide range of neuropsychological, neuroimaging and neurophysiological data to explore the dissociation between these different aspects of higher somatosensory function.Body Beyond SI 3

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Section: Introductionmentioning

confidence: 99%

More than skin deep: Body representation beyond primary somatosensory cortex

2010

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“…Vibration induces a bias into the muscle spindle output. The vibrated muscle is usually perceived to be longer than it actually is (Cordo et al 2005;Goodwin et al 1972b;Roll and Vedel 1982). This lengthening illusion under vibration will cause corrective displacement of the center of mass, related to the amount in which the central nervous system uses these signals for postural control.…”

Section: Introductionmentioning

confidence: 99%

Ankle proprioception is not targeted by exercises on an unstable surface

et al. 2011

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Laboratory study using a repeated measures design. The aim of this study was to determine if ankle proprioception is targeted in exercises on unstable surfaces. Lateral ankle sprain (LAS) has recurrence rates over 70%, which are believed to be due to a reduced accuracy of proprioceptive signals from the ankle. Proprioceptive exercises in rehabilitation of LAS mostly consist of balancing activities on an unstable surface. The methods include 100 healthy adults stood barefoot on a solid surface and a foam pad over a force plate, with occluded vision.Mechanical vibration was used to stimulate proprioceptive output of muscle spindles of triceps surae and lumbar paraspinal musculature. Each trial lasted for 60 s; vibration was applied from the 15th till the 30th second. Changes in mean velocity and mean position of the center of pressure (CoP) as a result of muscle vibration were calculated. Results show that on foam, the effect of triceps surae vibration on mean CoP velocity was significantly smaller than on a solid surface, while for paraspinal musculature vibration the effect was bigger on foam than on solid surface. Similar effects were seen for mean CoP displacement as outcome. Exercises on unstable surfaces appear not to target peripheral ankle proprioception. Exercises on an unstable surface may challenge the capacity of the central nervous system to shift the weighting of sources of proprioceptive signals on balance.

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“…This effect has been explained as a corrective reaction to perceived backward leaning of the body (e.g., Kavounoudias et al 1999;Lekhel et al 1997), in the sense that neck muscle vibration induces the illusory perception of a lengthening of the neck muscles (Goodwin et al 1972a(Goodwin et al , 1972bLackner and Levine 1979;Gilhodes et al 1986), which may signify a distal movement (forward tilt of the head) or a proximal movement (forward movement of the body below the space-fixed head). Vestibular or visual information indicating constant head orientation provides sensory evidence against the former (distal) interpretation.…”

Section: Introductionmentioning

confidence: 99%

Local and global effects of neck muscle vibration during stabilization of upright standing

et al. 2011

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Neck muscle vibration (NMV) during upright standing is known to induce forward leaning, which has been explained as a global response to the (illusory) perception of a lengthening of the dorsal neck muscles. However, the effects of NMV both at the level of individual joints and on whole-body postural coordination, and its potential modulation by vision, have not yet been analyzed in detail. Eight healthy young adult participants completed a total of ten trials each, with a 10-s period of unperturbed standing followed by a 10-s period of NMV. Participants were instructed to stand ''as still as possible''. This postural task was executed under two visual conditions: eyes open (EO) and eyes closed (EC). Postural responses were measured in terms of center of pressure (CoP) and center of mass (CoM) profiles, and whole-body kinematics. Responses to NMV at the level of individual body segments and joints were assessed by decomposing the time series into linear trends and residual fluctuations. Inter-segmental coordination was analyzed using a decorrelation technique, assessing motor-equivalent stabilization of four task-related variables: CoM position, trunk orientation, as well as head position and orientation. NMV induced a general forward leaning response under both visual conditions, visible in CoP, CoM, segment positions and orientations. Locally, NMV induced a pronounced extension of the atlanto-occipital joint. Residual fluctuations were higher with EC and unaffected by NMV. Coordination analysis showed that stabilization of different body parts was differentially affected by NMV. Head orientation was consistently stabilized across all conditions, with weaker coordination in the EC condition. In contrast, motor-equivalent stabilization of CoM and head position, and trunk orientation was only observed during no-vibration periods. Taken together, our results demonstrate specific effects of vision and proprioception on different aspects of local and global postural control. While perturbed neck proprioception seemed to affect the postural ''set point'' (inducing forward leaning), vision appeared to mainly serve in noise reduction (residual fluctuations) and control of head orientation.

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The Contribution of Muscle Afferents to Keslesthesia Shown by Vibration Induced Illusionsof Movement and by the Effects of Paralysing Joint Afferents

Cited by 1,214 publications

References 25 publications

More than skin deep: Body representation beyond primary somatosensory cortex

More than skin deep: Body representation beyond primary somatosensory cortex

Ankle proprioception is not targeted by exercises on an unstable surface

Local and global effects of neck muscle vibration during stabilization of upright standing

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