Electromyographic Investigations of the Tongue and Circumoral Muscular Sling with Fine-Wire Electrodes

Vitti, Mathias; Basmajian, John V.; Ouellette, P.; Mitchell, Dorothy; Eastmen, W P; Seaborn, R D

doi:10.1177/00220345750540042401

Cited by 38 publications

(29 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Two stainless steel Teflon-coated 36-gauge wire electrodes were inserted 15-20 mm into the body of the genioglossus muscle 3 mm lateral to the frenulum of the tongue on each side, using a 25-gauge needle, which was quickly removed, leaving the wires in place. This technique has been described previously (Vitti et al 1975).…”

Section: Measurementsmentioning

confidence: 99%

Long-term facilitation of genioglossus activity is present in normal humans during NREM sleep

Chowdhuri

Pierchala

Aboubakr

et al. 2008

Respiratory Physiology & Neurobiology

View full text Add to dashboard Cite

Episodic hypoxia (EH) is followed by increased ventilatory motor output in the recovery period indicative of long-term facilitation (LTF). We hypothesized that episodic hypoxia evokes LTF of genioglossus (GG) muscle activity in humans during non-rapid eye movement sleep (NREM) sleep. We studied 12 normal non-flow limited humans during stable NREM sleep. We induced 10 brief (3 minute) episodes of isocapnic hypoxia followed by 5 minutes of room air. Measurements were obtained during control, hypoxia, and at 5, 10, 20, 30 and 40 minutes of recovery, respectively, for minute ventilation (V̇I), supraglottic pressure (P SG ), upper airway resistance (R UA ) and phasic GG electromyogram (EMG GG ). In addition, sham studies were conducted on room air. During hypoxia there was a significant increase in phasic EMG GG (202.7±24.1% of control, p<0.01) and in V̇I (123.0 ±3.3% of control, p<0.05); however, only phasic EMG GG demonstrated a significant persistent increase throughout recovery (198.9±30.9%, 203.6±29.9% and 205.4±26.4% of control, at 5, 10, and 20 minutes of recovery, respectively, p<0.01). In multivariate regression analysis, age and phasic EMG GG activity during hypoxia were significant predictors of EMG GG at recovery 20 minutes. No significant changes in any of the measured parameters were noted during sham studies. Conclusion: 1) EH elicits LTF of GG in normal non-flow limited humans during NREM sleep, without ventilatory or mechanical LTF. 2) GG activity during the recovery period correlates with the magnitude of GG activation during hypoxia, and inversely with age.

show abstract

Section: Measurementsmentioning

confidence: 99%

Long-term facilitation of genioglossus activity is present in normal humans during NREM sleep

Chowdhuri

Pierchala

Aboubakr

et al. 2008

Respiratory Physiology & Neurobiology

View full text Add to dashboard Cite

show abstract

“…Because the buccinator contributes fibers to the parotid duct, it has also been speculated that the muscle could assist salivary secretion 2. Early electromyographic (EMG) evaluation of the buccinator in humans indicated it was strongly but irregularly active during most oral functions including sucking, blowing, swallowing, smiling, and speech, generally in association with the orbicularis oris muscle 3–5. More recent and complete work in humans6 and in rabbits7 has concentrated instead on the activity of the buccinator in mastication.…”

Section: Introductionmentioning

confidence: 99%

The buccinator during mastication: A functional and anatomical evaluation in minipigs

Dutra

Cária

Rafferty

et al. 2010

Archives of Oral Biology

View full text Add to dashboard Cite

Objective-The buccinator muscle forms the lateral wall of the oral cavity. It is presumed to aid mastication by maintaining bolus position. Such a function would involve thickening the cheek, possibly compressing the alveolar bone and contributing to malocclusions. However, neither buccinator deformation nor its effect on pressure has been demonstrated. Our objective was to evaluate buccinator EMG during feeding, its changes in length and thickness, and the pressure exerted on its alveolar attachment, using miniature pigs as an animal model. Methods-EMGof the buccinator and other oral muscles was recorded with fine-wire electrodes. Anteroposterior length and mediolateral thickness of the buccinator were evaluated with implanted sonomicrometry crystals, and pressure was measured by flat transducers placed beneath the mandibular origin of the buccinator. Recordings were made during feeding and muscle stimulation. Tissues were collected postmortem for histology.Results-During mastication, buccinator EMG showed regular peaks that preceded those of the jaw closers. Pattern differences clearly distinguished working and balancing sides. The buccinator shortened and thickened when it contracted. Positive pressures were observed at the mandibular attachment of the buccinator, increasing when the muscle was active. Histological evaluation showed a complex interweaving of fibers closely associated with salivary tissue.Conclusions-Buccinator contraction does thicken the cheek, and during mastication this activity takes place just as the closing stroke begins. In addition to controlling the bolus, there may be an effect on salivation. Despite the fact that the muscle pulls on its attachment, the local mechanical environment at the alveolar bone is one of positive pressure.

show abstract

“…Peri‐oral muscles have received considerable attention in the literature. Numerous EMG studies of the OO and BUC have been conducted relating to facial expression, pronunciation, swallowing, sucking, blow‐ing, mandibular movements, and mastication …”

mentioning

confidence: 99%

“…The actions that activate OO and BUC muscles, such as pursing, laughing, and speaking, are used to record the NZ. A review of the literature reveals a lack of data regarding evaluation of the EMG activity of BUC and OO muscles in edentulous patients wearing complete dentures fabricated using neutral zone techniques.…”

mentioning

confidence: 99%

An Electromyographic Analysis of Orbicularis Oris and Buccinator Muscle Activity in Patients with Complete Dentures Fabricated Using Two Neutral Zone Techniques—A Pilot Study

Ladha

Gill

Gupta

et al. 2013

Journal of Prosthodontics

View full text Add to dashboard Cite

show abstract

Electromyographic Investigations of the Tongue and Circumoral Muscular Sling with Fine-Wire Electrodes

Cited by 38 publications

References 10 publications

Long-term facilitation of genioglossus activity is present in normal humans during NREM sleep

Long-term facilitation of genioglossus activity is present in normal humans during NREM sleep

The buccinator during mastication: A functional and anatomical evaluation in minipigs

An Electromyographic Analysis of Orbicularis Oris and Buccinator Muscle Activity in Patients with Complete Dentures Fabricated Using Two Neutral Zone Techniques—A Pilot Study

Contact Info

Product

Resources

About