Bilaterality of the jaw-opening reflex in the cat

Junge, Douglas; Faermark, W.; Friedman, D.H.

doi:10.1016/0003-9969(79)90170-5

Cited by 11 publications

(1 citation statement)

References 14 publications

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“…Many studies have provided evidence that mechanical stimulation to the periodontal apparatus induces facilitatory or inhibitory responses of jaw-opening and jaw-closing muscles (Hannam and Matthews, 1969;Sessle and Greenwood, 1976;Sessle, 1977a;Nakamura et ai., 1982). Detailed description of the jaw-opening reflex pathway in cats are available (Kidokoro et al, 1968;Sumino, 1971;Junge, Faermark and Friedman, 1979). Evidence is mainly based upon research in animals, e.g.…”

Section: Introductionmentioning

confidence: 99%

Short and long latency jaw-opening reflex responses elicited by mechanical stimulation in man

Yamada

Stohler

Shimada

et al. 1985

Archives of Oral Biology

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Jaw-opening reflex responses elicited by tapping the chin during maximum clenching in incisal edge-to-edge contact position were studied in 10 healthy subjects. Stimuli were also delivered during weak clenching on a rubber stamp, separating the incisors by approx. 10 mm and protruding the mandible to the edge-to-edge incisor relationship. All four central incisors were stimulated simultaneously. With weak stimuli, there was a short-latency (9.5 ms) digastric response which may have had a disynaptic pathway. Taps of moderate strength produced long-latency (20 ms) responses, and sometimes a short-latency (9.5 ms) component as well. Strong (non-painful) taps produced an even longer-latency digastric response, 30 ms or more following the stimulus with less synchronization than earlier responses. Jaw-jerk reflexes occurred 8.5 ms following the tap, independently of the magnitude of the stimulus. Local anaesthesia of the upper and lower incisors abolished the digastric muscle response. Thus large periodontal afferents may be responsible for the early digastric reflex activity and smaller fibres for later effects. Temporal summation of the reflex response probably occurred when all incisors were stimulated simultaneously.

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Section: Introductionmentioning

confidence: 99%