Influence of visual feedback on force–EMG curves from spinally innervated versus trigeminally innervated muscles

Iida, Takashi; Komiyama, Osamu; Obara, Ryoko; Kawara, Misao; Svensson, Peter

doi:10.1016/j.archoralbio.2012.12.005

Cited by 29 publications

(37 citation statements)

References 25 publications

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“…To evaluate variability during tooth clenching, we analysed CVs of RMS EMG amplitude in the EMG study. Our previous study using visual feedback also calculated CVs of RMS EMG amplitude, and CVs were in the range of 20–40% . As the present study using the special bite device also showed CVs in the range of 20–40%, these findings suggest that the novel bite devices can control force levels during tooth clenching by providing feedback from the periodontal mechanoreceptors during fMRI scans.…”

Section: Discussionsupporting

confidence: 77%

Analysis of brain and muscle activity during low‐level tooth clenching – a feasibility study with a novel biting device

Iida

Overgaard

Komiyama

et al. 2014

J of Oral Rehabilitation

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In electromyographic (EMG) and functional magnetic resonance imaging (fMRI) studies, muscle and brain activity was compared during low levels of tooth clenching using a novel biting device to control bite force. A total of 21 healthy subjects performed motor tasks, comprising tooth clenching at 5, 10 and 20 N. During all measurements, subjects kept the novel bite device between the anterior teeth during tooth clenching. The EMG study (n = 15) characterised jaw muscle activity for the three motor tasks and demonstrated significant differences in root mean square (RMS) EMG amplitude between 5-, 10- and 20-N tooth clenching (F = 46.21, P < 0.001). There were no differences in variability of muscle activity between the three tooth-clenching levels. In an fMRI pilot study (n = 6), statistical comparisons were used to identify brain regions with significant activation in the subtraction of baseline from 5- or 20-N tooth-clenching activity. 5- and 20-N tooth clenching significantly and bilaterally activated the sensorimotor cortex, supplementary motor area, cerebellum and basal ganglia (P < 0.05, corrected for multiple comparisons). However, activation of each brain region did not differ significantly between two tooth-clenching tasks. Based on these preliminary findings, we propose that the novel biting device may be useful in further fMRI studies on controlled jaw muscle activation patterns in different craniofacial pain conditions. In addition, our fMRI result suggests that there are no significant differences in brain activity within low levels of tooth clenching with controlled force.

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Section: Discussionsupporting

confidence: 77%

Analysis of brain and muscle activity during low‐level tooth clenching – a feasibility study with a novel biting device

Iida

Overgaard

Komiyama

et al. 2014

J of Oral Rehabilitation

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“…The mechanoreceptors in the skin of the hand and the orofacial region are found to be innervated by fast-conducting, large-diameter, myelinated a-beta axons, that respond vigorously to subtle mechanical deformation applied to their receptive fields 8 . However, despite these similarities studies have shown some differences in the cortical control and force execution between the trigeminally innervated masticatory muscles and spinally innervated hand muscles 9, 10 .…”

Section: Introductionmentioning

confidence: 99%

Training-induced dynamics of accuracy and precision in human motor control

Kumar

Tanaka

Grigoriadis

et al. 2017

Sci Rep

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The study investigated the dynamic changes in accuracy and precision during a simple oral and digital motor task involving a controlled and a ballistic force. Eighteen healthy participants participated in four experimental sessions during which they performed one hundred trials of targeting a controlled (low/high hold force) and a ballistic force during an oral and a digital motor task (OMT and DMT). Accuracy and precision across one hundred trials were calculated and subjected to segmented linear regression analysis. Repeated performance of controlled forces show a significant dynamic change in accuracy during initial stage of targeting high hold forces during OMT and a significant dynamic change in both accuracy and precision during final stage of targeting high hold forces during DMT. Repeated performance of ballistic force showed a significant dynamic change in both accuracy and precision during final stage of targeting high hold force forces during OMT and a significant dynamic change in accuracy during the initial stages of targeting high hold force during the DMT. The findings indicate a subtle degree of dissociation between accuracy and precision in terms of dynamic modulation of forces due to repeated performance of both OMT and DMT.

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“…It is suggested that the two systems (i.e., trigeminal and spinal system) can have several inherent differences wherein visual feedback is available in the hand motor tasks and absent during oral tasks32. Studies have emphasized that role of visual feedback as one of the important modality for optimizing performance3334. Subsequently, absence of sensory inputs motor performance is impaired and mental attention required to complete the restrained task is prolonged.…”

Section: Discussionmentioning

confidence: 99%

Perturbed oral motor control due to anesthesia during intraoral manipulation of food

Grigoriadis

Kumar

Svensson

et al. 2017

Sci Rep

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Sensory information from periodontal mechanoreceptors (PMRs) surrounding the roots of natural teeth is important for optimizing the positioning of food and adjustment of force vectors during precision biting. The present experiment was designed to test the hypothesis; that reduction of afferent inputs from the PMRs, by anesthesia, perturbs the oral fine motor control and related jaw movements during intraoral manipulation of morsels of food. Thirty healthy volunteers with a natural dentition were equally divided into experimental and control groups. The participants in both groups were asked to manipulate and split a spherical candy into two equal halves with the front teeth. An intervention was made by anesthetizing the upper and lower incisors of the experimental group while the control group performed the task without intervention. Performance of the split was evaluated and the jaw movement recorded. The experimental group demonstrated a significant decrease in measures of performance following local anesthesia. However, there was no significant changes in the duration or position of the jaw during movements in the experimental and control group. In conclusion, transient deprivation of sensory information from PMRs perturbs oral fine motor control during intraoral manipulation of food, however, no significant alterations in duration or positions of the jaw during movements can be observed.

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Influence of visual feedback on force–EMG curves from spinally innervated versus trigeminally innervated muscles

Cited by 29 publications

References 25 publications

Analysis of brain and muscle activity during low‐level tooth clenching – a feasibility study with a novel biting device

Analysis of brain and muscle activity during low‐level tooth clenching – a feasibility study with a novel biting device

Training-induced dynamics of accuracy and precision in human motor control

Perturbed oral motor control due to anesthesia during intraoral manipulation of food

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