The effects of inhibitory controls triggered by heterotopic noxious stimuli on a jaw reflex evoked by perioral stimuli in man

Cadden, Samuel W.; Newton, James P.

doi:10.1016/0003-9969(94)90143-0

Cited by 38 publications

(45 citation statements)

References 24 publications

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“…In a previous study, it had been found that this stimulus and noxious, but not non-noxious, heat stimuli powerfully modulated another jaw reflex (that evoked by electrical stimulation of the lip; Cadden & Newton, 1994). The cold water was contained in the central chamber of a twochamber bath while the outer chamber contained a slurry of ice.…”

Section: Stimulation Techniques: Conditioning Stimulimentioning

confidence: 97%

“…This level of activity (10 % MVC) has been shown to be adequate to permit the emergence of inhibitory and excitatory reflex responses without producing muscle fatigue (e.g. Cadden & Newton, 1994.…”

Section: Visual Feedbackmentioning

confidence: 99%

“…The hand was always ipsilateral to the tooth receiving the test stimuli and the masseter from which recordings were made. This condition which was denoted as remote noxious stimulation, had previously been shown to modulate reflexes evoked by electrical stimulation of the lip (Cadden & Newton, 1994) or by tapping teeth (Cadden et al 1996a). The hand was immersed in the water up to the wrist from 10 s beforehand, until the end of the 51 s period required for the application of 18 test stimuli (see protocol below).…”

Section: Stimulation Techniques: Conditioning Stimulimentioning

confidence: 99%

“…Wang et al 1999) or remote (e.g. Cadden & Newton, 1994;Cadden et al 1996a) parts of the body. In the latter context, inhibitory jaw reflexes initiated by electrical stimulation of the upper lip (Cadden & Newton, 1994) or by tapping on teeth (Cadden et al 1996a) can be modulated by noxious thermal stimulation of the limbs.…”

mentioning

confidence: 99%

“…Cadden & Newton, 1994;Cadden et al 1996a) parts of the body. In the latter context, inhibitory jaw reflexes initiated by electrical stimulation of the upper lip (Cadden & Newton, 1994) or by tapping on teeth (Cadden et al 1996a) can be modulated by noxious thermal stimulation of the limbs. It appeared that these modulatory effects may have been specifically or preferentially targeting reflex responses evoked by higher threshold afferents although there was no evidence as to whether these were higher threshold mechanoreceptors or nociceptors.…”

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confidence: 99%

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Remote Noxious Stimuli Modulate Jaw Reflexes Evoked by Activation of Periodontal Ligament Mechanoreceptors in Man

Mason

Bellows

Glas

et al. 2002

Experimental Physiology

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The purpose of the study was to investigate whether jaw reflexes evoked by selective stimulation of periodontal ligament mechanoreceptors are susceptible to modulation by remote noxious stimulation. Experiments were performed on 10 volunteer subjects. Skin surface recordings were made from the jaw-closing masseter muscle. The subjects activated the muscle to approximately 10 % of maximum by biting on a rubber impression of their molar teeth while they received visual feedback of the electromyogram (EMG) of the muscle. Reflexes were produced by the application of gentle mechanical stimuli to an upper central incisor tooth. The stimuli were in the form of 'ramp and hold' forces with a 5 ms rise-time and a 1.5 N plateau which lasted 350 ms. The resulting reflexes were recorded both under control conditions and while the subjects received a remote noxious stimulus (immersion of a hand in water at 3°C). In all 10 subjects, the stimuli produced a single period of inhibition of masseteric activity (latency, 12.8 ± 0.4 ms; duration, 18.1 ± 1.3 ms; means ± S.E.M.), which was usually followed by a period of increased masseteric activity. The period of inhibition constituted a downward wave in full-wave rectified, averaged signals. The integrals of such waves were significantly smaller (by 17 ± 6.5 %; P = 0.027; Student's t test) when the reflex was evoked during remote noxious stimulation rather than under control conditions. As such reflexes are believed to play a modulatory role during normal oral function, this finding may be relevant to disorders of mastication associated with pain. Experimental Physiology (2002) 87.6, 699-706. 2452

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Section: Stimulation Techniques: Conditioning Stimulimentioning

confidence: 97%

Section: Visual Feedbackmentioning

confidence: 99%

Section: Stimulation Techniques: Conditioning Stimulimentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Remote Noxious Stimuli Modulate Jaw Reflexes Evoked by Activation of Periodontal Ligament Mechanoreceptors in Man

Mason

Bellows

Glas

et al. 2002

Experimental Physiology

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Masseter reflexes modulated by pain

Svensson

2002

Mov Disord.

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The inhibitory effect of a chewing task on a human jaw reflex

2010

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This study was undertaken to investigate whether an inhibitory jaw reflex could be modulated by experimentally controlled conditions that mimicked symptoms of temporomandibular disorders. Reflecting on previous work, we anticipated that these conditions might suppress the reflex. Electromyographic recordings were made from a masseter muscle in 18 subjects, while electrical stimuli were applied to the upper lip. An inhibitory reflex wave (mean latency 47 ms) was identified and quantified. Immediately following an accelerated chewing task, which in most cases produced muscle fatigue and/or pain, the size of the reflex wave decreased significantly by about 30%. The suppression of inhibitory jaw reflexes by fatigue and pain may result in positive feedback, which may contribute to the symptoms of temporomandibular disorders. Future studies of temporomandibular disorder sufferers will help to determine whether such reflex changes reflect the underlying etiology and/or are a result of the temporomandibular disorder itself.

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The effects of inhibitory controls triggered by heterotopic noxious stimuli on a jaw reflex evoked by perioral stimuli in man

Cited by 38 publications

References 24 publications

Remote Noxious Stimuli Modulate Jaw Reflexes Evoked by Activation of Periodontal Ligament Mechanoreceptors in Man

Remote Noxious Stimuli Modulate Jaw Reflexes Evoked by Activation of Periodontal Ligament Mechanoreceptors in Man

Masseter reflexes modulated by pain

The inhibitory effect of a chewing task on a human jaw reflex

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