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At least 37 records · Page 2Linked to original sources
PubMed2006

One hour of tongue-task training is associated with plasticity in corticomotor control of the human tongue musculature.

Corticomotor control of the human tongue has been reported to undergo neuroplastic changes following several days of training in a tongue-protrusion task. The aims of the present study were to determine if a 1 h tongue-task training is sufficient to induce signs of neuroplastic changes in the corticomotor pathways, and to obtain preliminary information on the time course of such changes. Corticomotor excitability was assessed by changes in electromyographic activity evoked by transcortical magnetic stimulation (TMS) in 11 healthy subjects. Motor evoked potentials (MEPs) recorded in the tongue musculature and the first dorsal interosseous (FDI) muscle were assessed at four sessions: at baseline before training, 30 min after training, and 1 and 7 days after training. All subjects performed successfully the task (success rate: 38+/-4%). Thresholds for evoking MEPs by TMS in the tongue were decreased at 30 min, 1 and 7 days after training compared with baseline (ANOVA: P<0.001). Tongue MEP amplitudes were significantly increased at 1 day follow-up and had returned to baseline values at 7 days follow-up (ANOVA: P<0.001). No significant effect of tongue-task training on FDI MEPs was observed (ANOVA: P=0.160). Corticomotor topographic maps revealed increases (ANOVA: P<0.001) in area at the 1 day follow-up. The success rate was significantly correlated to the net increases in tongue MEPs at 1 day follow-up (Spearman: 0.615; P=0.0039). The present findings confirm that tongue task training is associated with plasticity of corticomotor excitability specifically related to the tongue musculature and further document that plasticity is evident within 30 min post-training and may last up to at least 7 days.

Adult↗
PubMed2004

The effect of vertical tongue loading on the position perception of the tongue.

We investigated the effects of vertical tongue loading on the position perception of the tongue. Five male and 5 female university students served as subjects. Vertical upward and downward loading forces were applied to the tongue of the subjects. Their task was to judge the perceived horizontal position of the tongue after tongue-loading directions. The means of the judgments for the control conditions (no tongue loading) were compared with the judgments for perceived horizontal position after tongue loading. The results showed that vertical tongue loading produced a shift in the perceived horizontal direction opposite to the applied force. These results fully replicated the analogous aftereffect found by Grover and Craske (1991) for horizontal tongue loading. However, the judgments of perceived horizontal position in the present study had lower variability than did those in Grover and Craske's study, suggesting that mapping of the tongue along the vertical axis is more precise than mapping along the horizontal axis.

Adult↗
PubMed1990

[Relation of pale tongue, purple tongue and TXA2-PGI2 regulation system].

This paper analysed the relationship between pale tongue, purplish tongue and TXB2, 6-keto-PGF1 alpha levels in plasma of 70 cases with coronary heart disease (CHD) and 45 normal subjects. The results showed the following characteristics: The pale tongue group (217.76 +/- 30.5 pg/ml) showed no significant difference in TXB2 level compared with the normal group (164.49 +/- 10.85 pg/ml, P greater than 0.05), while both showed significant difference compared with the purplish tongue group (360.1 +/- 31.3 pg/ml) and that with purple spots (485.07 +/- 106.1 pg/ml, P less than 0.01). The pale tongue group (179.29 +/- 9.08 pg/ml) showed a significant difference in 6-keto-PGF1 alpha level compared with the normal group (244 +/- 19.31 pg/ml, P less than 0.01), but it showed no significant difference compared with the purplish tongue group (185.08 +/- 17.07 pg/ml) and that with purple spots (229.3 +/- 33.2 pg/ml, P greater than 0.05). The comparison between the groups of purplish tongue and that with purple spots and the normal group showed no significant difference (P greater than 0.05). The pale tongue group (1.33 +/- 0.18) showed a marked difference in TXB2/6-keto-PGF1 alpha ratio compared with the normal group (0.72 +/- 0.04, P less than 0.01), the purplish tongue group (2.12 +/- 0.22, P less than 0.01) and that with purple spots (2.25 +/- 0.55, P less than 0.05). The purplish tongue group and that with purple spots showed significant difference compared with the normal group (P less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

6-Ketoprostaglandin F1 alpha↗
PubMed2006

Initial effects of the tongue crib on tongue movements during deglutition: a Cine-Magnetic resonance imaging study.

The objective of this study was to investigate the initial effects of a tongue crib on tongue movements during deglutition by using real time balanced turbo field echo (B-TFE) Cine-MR imaging. A total of 21 patients were evaluated in this study. The open-bite group (OBG) consisted of 11 patients (seven girls, four boys) who had a mean age of 11.09 +/- 2.02 years and a mean overbite of -5.14 +/- 1.83 mm. These patients were evaluated initially (T1) and while wearing a tongue crib (T2). A total of 10 patients (five girls, five boys) with a mean age of 14.5 +/- 2.6 years and with a mean overbite of 1.6 +/- 0.5 mm served as controls (CG), and only initial records were obtained from these patients. T2 was compared with T1 and CG. T1 was also compared with CG. We evaluated deglutition during three stages matching oral (1), pharyngeal (2), and esophageal (3) stages. Our results indicated that the tongue's tip positioned more posteriorly when the crib was in place (T2) compared with both T1 and CG; the anterior portion of the tongue's dorsum was at a lower position in T2 compared with both T1 and CG at stage 3; the midportion of the tongue's dorsum was at a lower position in T2 than in T1 and CG at stages 1 and 2. To compensate for the posterior position of the tongue's tip (caused by the tongue crib), adaptive changes occurred in the anterior and midportions of the dorsum of the tongue.

Adaptation, Physiological↗
PubMed1998

Articulatory function and tongue mobility after surgery followed by radiotherapy for tongue and floor of the mouth cancer patients.

The aim of this study was to determine which of the following factors--size of the post-excisional defect, site of the defect and type of reconstruction--influence tongue mobility and articulation disorders after treatment for cancer of the tongue and floor of the mouth. A total of 60 patients, who had been evaluated at least 6 months after surgery followed by radiotherapy (60 Gy in 30 fractions), were evaluated. According to the size of the post-excisional defect patients were divided into two groups: (1) defect less than 5 cm (35); (2) defect more than 5 cm (25). Based on the localisation of the defect patients were also divided into two groups: (1) anterior tongue and/or floor of the mouth (30); (2) lateral tongue and/or floor of the mouth (25) and tongue base (5). According to the type of reconstruction patients were divided into three groups: partly reconstructed (18); reconstructed with locally available tissue--local flaps (27); and with pectoralis major myocutaneous (PMMC) flaps (15). Articulation proficiency was assessed through Articulation Test and tongue mobility through Tongue Mobility Test. According to results of this study, type of reconstruction followed by size of post-excisional defect seemed to be the most influential factor in tongue mobility and articulation disorders after the tongue and floor of the mouth cancer treatment. Site of the defect has no influence.

Adult↗
PubMed2005

Longitudinal evaluation of patients with cancer in the oral tongue, tonsils, or base of tongue--does interstitial radiation dose affect quality of life?

PURPOSE: To evaluate health-related quality of life (HRQL) in patients with oral tongue, tonsil, or base of tongue cancer in a prospective longitudinal study and explore correlations between HRQL scores and interstitial radiation dose, dose rate, and volume of implant. METHODS AND MATERIALS: Ninety patients with oral tongue cancer (n=30) and tonsil or base of tongue cancer (n=60) were assessed with the European Organization of Research and Treatment of Cancer Quality of Life Questionnaire Core-30 and the European Organization of Research and Treatment of Cancer Head and Neck module at diagnosis, and after 3, 12, and 36 months of starting treatment. RESULTS: The HRQL of all patients decreased during treatment. Most HRQL scores returned to baseline values after 3 years; however, 60% of patients with oral tongue cancer and 80% with tonsil and base of tongue cancer reported problems with dry mouth and half of the patients with tonsil and base of tongue cancer reported problems with swallowing solid food at the 3-year followup. No correlations between brachytherapy quality indices and HRQL scores were found. CONCLUSIONS: Patients with oral tongue, tonsil, or base of tongue cancer reported significant problems with dry mouth and swallowing solid food throughout this 3-year followup study.

Adult↗
PubMed1994

Determination of sagittal tongue shape from the positions of points on the tongue surface.

This paper describes a method for determining the shape of the midsagittal tongue contour from the positions of points on the tongue surface. The positions of the points and the tongue shape were measured simultaneously by using an alternating magnetic field device and an ultrasonic B-mode scanner for continuous speech utterances. A comparison between the magnetic and the ultrasonic data revealed that the average measurement difference between the two types of data was 1.16 mm. The shape of the tongue contour was then represented by multivariable linear regression of the magnetically determined positions. The results of the regression analysis showed that the tongue contour was estimated, from four positions on the tongue, with an average estimation error of 1.24 mm. This estimation error could be reduced to 0.84 mm when there was no measurement error between the magnetic and the ultrasonic data, and it was further reduced to 0.43 mm when the receiver coils of the magnetic device were positioned optimally on the tongue. It was also shown that the number of data frames for calculating the regression coefficients could be reduced, while maintaining the estimation accuracy, by appropriately selecting data frames. Finally, the tongue shape was estimated successfully for several phonemes from the magnetically determined positions, thus demonstrating the usefulness of this method for observing the articulatory configuration of the tongue.

Form Perception↗
PubMed2004

Tongue-cleaning methods: a comparative clinical trial employing a toothbrush and a tongue scraper.

BACKGROUND: It is estimated that approximately 85% of all halitosis cases have their origin within the mouth; of these, 50% are caused by tongue residues. Previous studies have established that hydrogen sulfide and mercaptans are the primary components of halitosis. Thus, tongue cleaning gains importance as a means of halitosis management. METHODS: This investigation compared the efficacy of two mechanical methods for tongue cleaning through a handheld sulfide monitor. This crossover trial was carried out with 10 healthy subjects, 20 to 50 years old. Before the baseline measurement of the volatile sulfur compounds (VSCs), the subjects were instructed to refrain from any tongue cleaning method for 48 hours. The 10 participants were then placed in one of two groups (five each): 1) first week: tongue scraper, second week: soft-bristle toothbrush; 2) first week: toothbrush, second week: tongue scraper, with a 48-hour wash-out period between each week. RESULTS: The baseline measurements were compared with those of the end of each week using the Dunn method (alpha = 0.01). The tongue scraper showed a 75% reduction in VSCs, while the toothbrush only achieved a 45% reduction in VSCs. CONCLUSION: Although the tongue coating was removed by both methods, the tongue scraper performed better in reducing the production of volatile sulfur compounds.

Adult↗
PubMed2006

[Evaluation of therapeutic effects of Chinese materia medica by tongue image analysis software 1.0 based on tongue colors].

OBJECTIVE: To evaluate the therapeutic effects of Chinese materia medica in treating patients with different syndromes by tongue image analysis software 1.0 based on tongue colors, and to discuss the feasibility of applying this computer science-based techniques into drug evaluation. METHODS: The tongue colors and the areas of tongue fur were examined and analyzed by the tongue image analysis software 1.0 in healthy persons and the patients with different syndromes before and after treatment. The parameters of tongue colors consisted of the followings: the hue (H), the lightness (L), the saturation (S), and the values of red (R), green (G) and blue (B). RESULTS: Obvious differences could be revealed in tongue color index between the healthy persons and the patients in five groups of different syndromes. There also existed some significant differences in those index between patients before and after treatment. CONCLUSION: The tongue image analysis software 1.0 based on tongue colors is helpful to evaluate the therapeutic effects of Chinese materia medica.

Adolescent↗
PubMed2004

[Modification for primary tongue reconstruction with free forearm flap after radical operation of tongue carcinoma].

BACKGROUND & OBJECTIVE: Radical operation of tongue carcinoma causes hemi-tongue defective, which seriously affected the quality of life in these patients. The primary tongue reconstruction guaranteed the healing of the surgical incision at early stage. This may help to recover swallowing and speaking of the patients. However, the vascular crisis happened in the free flap proved to be an obstacle to the extensive application in the tongue reconstruction. This paper illustrated some modifications in the application of the free forearm flap, which may ensure the success in operation. METHODS: Some methods like skin flap design, preparation and vascular anastomosis were modified in the application among the 32 tongue carcinoma patients. RESULTS: The surgical incisions of the oral cavity and neck healed up, with no salivary fistula, chylorrhea, submandibular fistula, infection and other complications. After the operations, 6 flaps developed vascular crisis, and 5 flaps were successfully salvaged, meanwhile, one case failed, which resulted in the flap abandonment. The total successful transplantation rate reached 96.9%. The reconstructed tongue recovered, and the speaking as well as swallowing functions re-obtained. CONCLUSION: The modified methods of tongue reconstruction with free forearm flap improve the clinical effects of reconstructed tongue.

Adult↗
PubMed2004

Comparison of tongue functions between mature and tongue-thrust swallowing--an ultrasound investigation.

Many studies have proved that tongue thrusting plays a significant role in the etiology of some orofacial deformities. To learn more about the relationship between tongue function and the form of orofacial structures, it is important to recognize patients with abnormal swallowing patterns. A cushion scanning technique in combination with M-mode ultrasound was applied to measure and compare tongue movements between mature swallowing and tongue-thrust swallowing. Forty subjects with a mature swallowing pattern (23 female, 17 male, aged 21.8 +/- 6.1 years) and 15 subjects with a tongue-thrust swallowing pattern (8 female, 7 male, aged 13.6 +/- 6.6 years) were included in this study. Duration, range, speed, and reproducibility for each of the swallowing subphases were calculated and compared. Tongue-thrust swallowers had a longer late transport phase than mature swallowers (P <.0009), and the tongue speed was faster in the early final phase (P <.05) compared with mature swallowers. Distinctly different movements can be positively differentiated with the method used.

Adolescent↗
PubMed1983

"Stick out your tongue": tongue protrusion in neocortex and hypothalamic damaged rats.

Easily administered tests, analogues to the human neurological "stick out your tongue" tests, were devised to assess tongue use in normal, lateral hypothalamic (LH) and decorticate rats. LH and decorticate rats showed loss of tongue protrusion and licking immediately after surgery. Even though LH rats did not recover spontaneous eating dry food and drinking water, they showed extensive recovery of tongue protrusion and use. Decorticate rats regained the ability to eat dry food and drink water, but they showed minimal recovery of tongue protrusion and use. Comparisons of rats with variously located circumscribed neocortical lesions showed maximal tongue protrusion deficits followed orbital frontal cortex ablations. The results show: (1) that the tests developed and described are useful for routine examination of rats that have feeding abnormalities; (2) the feeding abnormalities of decorticate and LH rats can be dissociated; and (3) the orbital frontal cortex and corticofugal pathways passing through or adjacent to the LH may play a special role in the control of tongue and mouth use.

Animals↗
PubMed1999

Effect of co-activation of tongue protrudor and retractor muscles on tongue movements and pharyngeal airflow mechanics in the rat.

1. The purpose of these experiments was to examine the mechanisms by which either co-activation or independent activation of tongue protrudor and retractor muscles influence upper airway flow mechanics. We studied the influence of selective hypoglossal (XIIth) nerve stimulation on tongue movements and flow mechanics in anaesthetized rats that were prepared with an isolated upper airway. In this preparation, both nasal and oral flow pathways are available. 2. Inspiratory flow limitation was achieved by rapidly lowering hypopharyngeal pressure (Php) with a vacuum pump, and the maximal rate of flow (VI,max) and the nasopharyngeal pressure associated with flow limitation (Pcrit) were measured. These experimental trials were repeated while nerve branches innervating tongue protrudor (genioglossus; medial XIIth nerve branch) and retractor (hyoglossus and styloglossus; lateral XIIth nerve branch) muscles were stimulated either simultaneously or independently at frequencies ranging from 20-100 Hz. Co-activating the protrudor and retractor muscles produced tongue retraction, whereas independently activating the genioglossus resulted in tongue protrusion. 3. Co-activation of tongue protrudor and retractor muscles increased VI, max (peak increase 44 %, P < 0.05), made Pcrit more negative (peak decrease of 44 %, P < 0.05), and did not change upstream nasopharyngeal resistance (Rn). Independent protrudor muscle stimulation increased VI,max (peak increase 61 %, P < 0.05), did not change Pcrit, and decreased Rn (peak decrease of 41 %, P < 0.05). Independent retractor muscle stimulation did not significantly alter flow mechanics. Changes in Pcrit and VI,max at all stimulation frequencies were significantly correlated during co-activation of protrudor and retractor muscles (r2 = 0.63, P < 0.05), but not during independent protrudor muscle stimulation (r2 = 0.09). 4. These findings indicate that either co-activation of protrudor and retractor muscles or independent activation of protrudor muscles can improve upper airway flow mechanics, although the underlying mechanisms are different. We suggest that co-activation decreases pharyngeal collapsibility but does not dilate the pharyngeal airway. In contrast, unopposed tongue protrusion dilates the oropharynx, but has a minimal effect on pharyngeal airway collapsibility.

Animals↗
PubMed2004

Prevalence of fissured tongue, geographic tongue and median rhomboid glossitis among Israeli adults of different ethnic origins.

BACKGROUND: Fissured tongue (FT), geographic tongue (GT) and median rhomboid glossitis (MRG) are frequently misdiagnosed and overtreated. FT is a relatively common variant of the tongue that includes numerous grooves or fissures on the dorsum of the tongue, while GT usually appears as areas of atrophy and raised white borders. MRG is an erythematous patch of atrophic papillae located in the central area of the dorsum of the tongue. The prevalence of these lesions varies among different ethnic groups. However, their occurrence among the adult Israeli Jewish population of different ethnic origins is unknown. OBJECTIVE: To examine the prevalence of benign tongue lesions among adult Israeli Jewish urban, rural and industrial populations of different ethnic origins. METHODS: A total of 2,464 healthy Israeli adults were clinically examined and divided into three ethnic groups, Ashkenazi, Sephardic or Eastern, based on place of birth of both parents. The prevalences of FT, GT and MRG were evaluated. FT was subdivided according to four subtypes: mild, moderate, typical and central. RESULTS: The prevalence of FT was 30.5%. The most prevalent, typical FT, grooves over one third of the dorsal tongue, was noted in 11.5% of the study group. GT and MRG were found in 12.7 and 2.4% of the study population, respectively. A strong correlation was found between the occurrence of FT and GT, and a gradual increase in prevalence of FT and GT was noted with age. MRG decreased with age. CONCLUSIONS: Although no statistically significant differences were found in the prevalence of FT, GT and MRG among the different ethnic groups, ethnic background probably plays some role in its occurrence.

Adolescent↗
PubMed2003

[Quantitative study on tongue color in primary liver cancer patients by analysis system for comprehensive information of tongue diagnosis].

OBJECTIVE: To explore the characteristics of tongue color in patients with primary liver cancer (PLC). METHODS: Tongue color and its RGB value were analyzed quantitatively for PLC patients in different clinical periods and other cancer patients by analysis system for comprehensive information of tongue diagnosis. RESULTS: The rate of blue and purple tongue was higher (P<0.05) and all the values of RGB were lower (P<0.01) in PLC patients compared with other cancer patients. In different clinical periods, the rate of blue and purple tongue in stage III was the highest (P<0.05). CONCLUSION: The blue and purple tongue is one of the most important tongue characteristics of PLC patients.

Adult↗
PubMed1991

[Superficial tongue blood volume and the tongue spectrophotometric determination on coronary heart disease with blood stasis syndrome].

The tongue bodies of coronary heart disease (CHD) patients with blood stasis syndrome were looking dull purple in different degree. The authors adopted two kinds of biophysics methods which are tongue spectrophotometer and DM-80-6 superficial tongue blood volume meter. 52 CHD patients with blood stasis syndrome, 50 normal individuals and 26 patients before and after the treatment according to promote blood circulation to remove the blood stasis, were examined. The results were as follows: The purple ray values of the tongue spectrum of the CHD patients with blood stasis syndrome were more than that of normal individuals. Statistics showed significant difference (P less than 0.01). So was the tongue blood volume (P less than 0.01). In the treatment group, the purple ray value of tongue spectrum reduced, and the red ray volume of tongue increased significantly, as well (P less than 0.01). The results suggested that both methods may be quantitative comparative parameters for diagnosis, differentiation of symptoms and signs, and evaluation of the therapeutic effectiveness.

Adult↗
PubMed2003

Tongue viability after bilateral lingual artery ligation and surgery for recurrent tongue-base cancer.

A 73-year-old man came to us with a second primary tumor of the tongue base. He had undergone a total laryngectomy, neck dissections, and radiation for squamous cell carcinoma of the glottis 25 years earlier. Surgery was performed, including a subtotal tongue-base resection and pectoralis myocutaneous flap reconstruction. Intraoperative findings confirmed tumor involvement of the left lingual artery and hypoglossal nerve, both of which were sacrificed. Dissection revealed an intact but apparently thrombosed right lingual artery, and this was verified by intraoperative Doppler evaluation. Postoperatively, the preserved oral tongue remained well perfused and viable, and tongue mobility was good. In patients who have undergone previous head and neck cancer resections, collateral blood supply to the tongue might develop if the flow of one or both of the lingual arteries is interrupted. This possibility can be fully evaluated by preoperative angiography, which might offer these patients the potential for tongue preservation.

Aged↗