Abstract
In contrast with limb muscles, studies on H-reflexes in the trigeminal system are scarce. The present report aimed at reevaluating the responses obtained in the masseter and temporalis muscles after electrical stimulation of their nerves. Twenty-four subjects participated in the experiments. The reflexes were elicited in the masseter and temporal muscles by monopolar stimulation and recorded using surface electrodes. Stimulation of the masseteric nerve evoked an M-response in the masseter and an H-reflex in both the masseter and the temporal muscles. In contrast with the masseter muscle, where the homonymous H-reflex disappeared at higher stimulation intensities, the heteronymous temporal H-reflex remained and reached a plateau. Simultaneous stimulation of the masseteric and deep temporal nerves resulted in an M-response and an H-reflex in both the masseter and temporal muscles. Increasing stimulus intensitites led to disappearance of the H-reflex in both muscles. The results were compared with those obtained by others on limb muscles. As in these muscles, the presence of heteronymous H-reflexes in the jaw muscles can be used in future studies of motoneuronal excitability.
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Appenteng K, O'Donovan MJ, Somjen G, Stephens JA, Taylor A (1978) The projection of jaw elevator muscle spindle afferents to fifth nerve motoneurones in the cat. J Physiol (Lond) 279:409–423
Appenteng K, Donga R, Williams RG (1985) Morphological and electrophysiological determination of the projections of jawelevator muscle spindle afferents in rat. J Physiol (Lond) 369:93–113
Bergmans J, Delwaide PJ, Gadea-Ciria M (1978) Short-latency effects of low-threshold muscular afferent fibres on different motoneuronal pools of the lower limb in man. Exp Neurol 60:380–385
Bishop B, Hickenbottom RS, Moriarty TM (1984) Identification and assessment of factors contributing to variability of the jaw jerk. Exp Neurol 84:549–564
Blanksma NG, Van Eijden TMGJ (1990) Electromyographic heterogeneity in the human temporalis muscle. J Dent Res 69: 1686–1690
Blanksma NG, Van Eijden TMGJ, Weijs WA (1992) Electromyographic heterogeneity in the human masseter muscle. J Dent Res 71:47–52
Brooke JD, McIlroy WE (1985) Locomotor limb synergism through short latency afferent links. Electroencephalogr Clin Neurophysiol 60:39–45
Burke D, Adams RW, Skuse NF (1989) The effects of voluntary conctraction on the H-reflex of human limb muscles. Brain 112:417–433
Cavallari P, Katz R (1989) Pattern of projections of group I afferents from forearm muscles to motoneurones supplying biceps and triceps muscles in man. Exp Brain Res 78:465–478
Cavallari P, Katz R, Penicaud A (1992) Pattern of projections of group I afferents from elbow muscles to motoneurones supplying wrist muscles in man. Exp Brain Res 91:311–319
Créange A, Faist M, Katz R, Pénicaud A (1992) Distribution of heteronymous Ia facilitation and recurrent inhibition in the human deltoid motor nucleus. Exp Brain Res 90:620–624
Cruccu G (1986) Intracranial stimulation of the trigeminal nerve in man. I. Direct motor responses. J Neurol Neurosurg Psychiatr 49:411–418
Cruccu G (1989) Central and peripheral conduction in the human trigeminal motor system. In: Steenberghe D van, De Laat A (eds) EMG of jaw reflexes in man. Leuven University Press, Leuven, pp 3–17
Cruccu G, Bowsher D (1986) Intracranial stimulation of the trigeminal nerve in man. II. Reflex responses. J Neurol Neurosurg Psychiatr 49:419–427
Cruccu G, Berardelli A, Inghilleri M, Manfredi M (1989) Functional organization of the trigeminal motor system in man. Brain 112:1333–1350
Cruccu G, Inghilleri M, Berardelli A, Pauletti G, Casali C, Coratti P, Frisardi G, Thompson PD, Manfredi M (1994) Pathophysiology of hemimasticatory spasm. J Neurol Neurosurg Psychiatr 57:43–50
De Laat A, Macaluso GM (1995) H-like reflexes and M-responses in human masticatory muscles. In: Morimoto T, Matsuya T, Takada K (eds) Brain and oral functions. (Excerpta Medica 1079) Elsevier, Amsterdam, pp 65–76
Desmedt JE (1983) Mechanisms of vibration-induced inhibition or potentiation: tonic vibration reflex and vibration paradox in man. Adv Neurol 39:671–684
Fujii H (1977) Evoked EMG of masseter and temporal muscles. J Oral Rehabil 4:333–339
Fujii H, Mitani H (1973) Reflex responses of the masseter and temporal muscle in man. J Dent Res 52:1046–1050
Fukushima Y, Yamashita N, Shimada Y (1982) Facilitation of H-reflex by homonymous Ia afferent fibers in man. J Neurophysiol 48:1079–1088
Godaux E, Desmedt JE (1975) Human masseter muscle: H and tendon reflexes. Arch Neurol 32:229–234
Hultborn H, Meunier S, Morin C, Pierrot-Deseilligny E (1987) Assessing changes in presynaptic inhibition of Ia fibres: a study in man and the cat. J Physiol (Lond) 389:729–759
Lobbezoo F, Glas HW van der, Buchner R, Bilt A van der, Bosman F (1993) Gain and threshold of the jaw-jerk reflex in man during isometric contraction. Exp Brain Res 93:129–138
Macaluso GM, De Laat A (1995) The inflence of stimulating techniques on the masseteric and temporal M-responses in man. Arch Oral Biol 40:521–524
Meunier S, Penicaud A, Pierrot-Deseilligny E, Rossi A (1990) Monosynaptic Ia excitation and recurrent inhibition from quadriceps to ankle flexors and extensor in man. J Physiol (Lond) 423:661–675
Meunier S, Pierrot-Deseilligny E, Simonetta M (1993) Pattern of monosynaptic heteronymous Ia connections in the human lower limb. Exp Brain Res 96:534–544
Nozaki S, Iriki A, Nakamura Y (1985) Trigeminal mesencephalic neurons innervating functionally identified muscle spindles and involved in the monosynaptic stretch reflex of the lateral pterygoid muscle of the guinea pig. J Comp Neurol 236:106–120
Panizza M, Lelli S, Hallet M (1989a) H-reflex in nonhomonymous muscles in the human forearm. Neurology 39:785–788
Panizza M, Nilsson J, Hallet M (1989b) Optimal stimulus for the H reflex. Muscle Nerve 12:576–579
Pierrot-Deseilligny E, Morin C, Berengo C, Tankov N (1981) Pattern of group I fibre projections from ankle flexor and extensor muscle in man. Exp Brain Res 42:337–350
Schieppati M (1987) The Hoffmann reflex: a means of assessing spinal reflex excitability and its descending control in man. Prog Neurobiol 28:345–376
Shigenaga Y, Yoshia K, Tsuru K, Otani K, Coa CQ (1988) Physiological and morphological characteristics of cat masticatory motoneurones. Intracellular injection of HRP. Brain Res 461:238–256
Smith A, Moore CA, Pratt CA (1985) Distribution of the human jaw stretch reflex response elicited by percutaneous localized stretch of jaw-closing muscles. Exp Neurol 88:544–561
Widmer CG, Lund JP (1989) Evidence that peaks in EMG averages can sometimes be caused by inhibition of motoneurons. J Neurophysiol 62:212–219
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Macaluso, G.M., De Laat, A. H-reflexes in masseter and temporalis muscles in man. Exp Brain Res 107, 315–320 (1995). https://doi.org/10.1007/BF00230051
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DOI: https://doi.org/10.1007/BF00230051