Logemann JA: The need for clinical trials in dysphagia. Dysphagia. This is to our knowledge the first study showing cortical changes elicited by this simple swallowing therapy technique. Current strategies of swallowing therapy involve on the one hand modification of either eating behaviour or swallowing technique and on the other hand facilitation of swallowing with the use of TTOS. Each individual's EMG signal was used to mark the beginning of main muscle activation (M1) and the end of the task-specific muscle activity (M2) for every single swallow (see figure 4). 10.1097/00005537-200212000-00015. It is hypothesized that the touch and cold Oropharyngeal dysphagia frequently presents in people with idiopathic Parkinson's disease (IPD). Our results and their interpretation are also supported by behavioural studies employing TTOS showing both changes of oral phase tasks, like a heightened sensitivity of the oral cavity [19] and a reduced delay in swallowing initiation, and modification of the pharyngeal phase, like an improved triggering of the swallowing reflex [32, 33]. In the present study we employed whole-head MEG and SAM analyses to study cortical activity during self-paced volitional swallowing with and without preceding TTOS. J Rehabil Med 2009; 41: 174–178 Thermal–tactile stimulation (TTS) is a technique employed by clinicians to target a delayed pharyngeal swallowing reflex. 1997, 272 (4 Pt 1): G802-808. 10.1007/BF00366386. We suggest that these results reflect short-term cortical plasticity of sensory swallowing areas. They reduced the delay in swallowing initiation, hastened triggering of pharyngeal swallowing in patients with neurogenic dysphagia and even led to a reduced frequency of radiographically observed aspiration. Changes in the beta-frequency-band during swallowing execution compared to the resting stage. Johnson ER, McKenzie SW, Sievers A: Aspiration pneumonia in stroke. Another advantage compared to needle EMG is the broader muscle spectrum that can be recorded. Google Scholar. Neuroimage. Event related desynchronization. Wavelet analysis of the parietal areas. Although thermal tactile oral stimulation is a common method to treat dysphagic patients to improve swallowing movement, little is known about the possible mechanisms. 2008, 8 (1): 13-10.1186/1471-2377-8-13. Additionally to the observed and well known behavioural changes following oropharyngeal stimulation few studies focussed on its effects regarding the cortical level. A LI of about 0 represents indeterminate dominance, 1, respectively -1 are indicating unilateral activation [26, 52]. Rosenbek JC, Robbins J, Fishback B, Levine RL: Effects of thermal application on dysphagia after stroke. Thermal tactile stimulation also, known as thermal application is one type of therapy used for the treatment of swallowing disorders. Median pharyngeal delay time was reduced on fluids (0.20 s, 95% CI = 0.12-0.34, p = 0.002). Apart from that, electrical pharyngeal stimulation showed an increase of cortical excitability in different TMS studies [20, 38]. It is still unclear whether these findings will translate into a clinically beneficial effect. TTS significantly reduced median pharyngeal transit time on fluids (0.20 s, 95% CI = 0.12-0.28, p = 0.004) and on paste (0.3 s, 95% CI = 0.08-0.66, p = 0.01). Many thermal tactile displays have been developed to The first study focusing on this topic in 1997 demonstrated a facilitation of the cortical pathways by cranial nerve stimulation [37]. From the filtered MEG data, SAM was used to generate a 20 × 20 × 14 cm volumetric pseudo-t images [46] with 3 mm voxel resolution for both frequency bands. Though from the submental EMG data no clear cut between oral and pharyngeal phase can be defined, it is likely that the beginning of submental muscle activation represents at least part of the oral phase, while about 500 ms later and in the end of the recorded submental muscle activation the pharyngeal phase is taking place. [Purpose] The effectiveness of neuromuscular electrical stimulation in the rehabilitation of swallowing remains controversial. Am J Physiol Gastrointest Liver Physiol. CAS CAS Median pharyngeal delay time was reduced on fluids (0.20 s, 95% CI = 0.12-0.34, p = 0.002). To eliminate a bias due to the forced swallows directly before measurement subjects were instructed to swallow 5 times about 3 minutes before the beginning of the MEG recording in the condition without TTOS. T1 - Immediate effects of thermal-tactile stimulation on timing of swallow in idiopathic parkinson's disease. Methods. TTS did not significantly alter median oral transit time on either fluid or paste consistency. PubMed J Speech Hear Res. 2002, 113 (3): 354-366. 1983, San Diego CA: CH Press. 10.1007/BF00714591. According to the changes of the time-frequency analysis MEG data were than filtered within two frequency bands: alpha (8–13 Hz) and beta (13–30 Hz). 1996, 11 (4): 225-233. The side chosen for tube placement was alternated between subjects but consistent in each subject. In each subject, both measurements were 14 days apart. 10.1097/00001756-200504040-00005. Group analysis of SAM results revealed significant event related desynchronizations (ERD) in the beta frequency band located in the primary sensorimotor cortex (BAs 4, 3, 1, and 2) in both conditions (p < 0.05) (see figure 2). He was funded by Deutsche Forschungsgemeinschaft. Therefore a direct comparison is possible without further calculations. 2. Manage cookies/Do not sell my data we use in the preference centre. Dysphagia is a leading complication in stroke patients causing aspiration pneumonia, malnutrition and increased mortality. Despite the high incidence of aspiration pneumonia after stroke, treatment options for accelerating the recovery of swallowing by improving physiology and reducing aspiration remain limited. Cookies policy. This suggests that afferents from the oral-pharyngeal chemoreceptors can facilitate deglutition [36]. This cross-modal thermo-tactile interaction could reflect a process of object recognition, based on the prior that many objects are thermally homogenous. 1991, 34 (6): 1257-1268. In the difference plot blue corresponds to stronger activation in the measurement after stimulation, while red demonstrates stronger activation in the condition without stimulation. PubMed Central The tip of the tube was placed in the corner of the mouth between the buccal part of the teeth and the cheek. Immediate effects of thermal-tactile stimulation on timing of swallow in idiopathic parkinson's disease. CAS 10.1006/meth.2001.1238. The corresponding resting stage served as a control. 2006, 21 (1): 21-27. A clear distinction between the two phases based on the submental EMG recordings is not possible. 10.1016/S1388-2457(02)00007-X. This is also supported by the MEG study of our group mentioned above [29]. Thirteen participants with IPD and known dysphagia attended for videofluoroscopy during which standardised volumes of liquid barium and barium paste were administered preceding and immediately subsequent to TTS. Significant activation in group analysis is shown (p < 0.001). To facilitate volitional swallowing during MEG recording water was infused into the oral cavity via a flexible plastic tube 4.7 mm in diameter attached to a fluid reservoir. -- This occurs before the presentation of a bolus and the patient’s attempt to swallow. Correspondence to © 2021 BioMed Central Ltd unless otherwise stated. 1998, 79 (1): 14-19. 10.1016/S1052-3057(96)80023-1. Leelamanit V, Limsakul C, Geater A: Synchronized electrical stimulation in treating pharyngeal dysphagia. Based on their findings, Daniels and co-workers suggested a left hemisphere control for volitional aspects of swallowing and a right hemisphere control for reflexive swallowing behaviour. Recordings were performed while subjects were seated in a comfortably upright position and watching a self selected silent movie. statement and Therefore the results of the normal swallowing condition found in the present study are mainly concordant with the previous investigation. Smithard DG, O'Neill PA, England RE, Park CL, Wyatt R, Martin DF, Morris J: The natural history of dysphagia following a stroke. The effects of TTS on swallowing have not yet been investigated in IPD. J Clin Neurophysiol. 2009, 30 (4): 1352-60. c) The difference plot of both measurements (without oropharyngeal stimulation minus with oropharyngeal stimulation) reveals variations mainly during deglutition (after M1). 10.1002/hbm.20488. CAS Jean A, Car A, Roman C: Comparison of activity in pontine versus medullary neurones during swallowing. Initiation- The patient will demonstrate a swallow delay of only 1-2 seconds following thermal tactile stimulation on 10/10 therapeutic trials to decrease aspiration risk Compensatory- Patient will demonstrate adequate use of the following compensatory strategies (chin tuck, multiple swallows, head turn, etc.) Thermal–tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. Thermal-tactile stimulation and changing bolus characteristics (therapeutic procedure is mentioned above under section B.) UR - http://www.scopus.com/inward/record.url?scp=77957297215&partnerID=8YFLogxK, UR - http://www.scopus.com/inward/citedby.url?scp=77957297215&partnerID=8YFLogxK, Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2021 Elsevier B.V, "We use cookies to help provide and enhance our service and tailor content. Pommerenke studied tactile stimuli at several places in the oral cavity and found that the faucial pillars were the most sensitive in triggering swallowing. Dysphagia. Arch Phys Med Rehabil. By this the level of attention was kept stable and avoided falling asleep. Furlong PL, Hobson AR, Aziz Q, Barnes GR, Singh KD, Hillebrand A, Thompson DG, Hamdy S: Dissociating the spatio-temporal characteristics of cortical neuronal activity associated with human volitional swallowing in the healthy adult brain. Dysphagia. Thirteen participants with IPD and known dysphagia attended for videofluoroscopy during which standardised volumes of liquid barium and barium paste were administered preceding and immediately subsequent to TTS. AJNR Am J Neuroradiol. 2002, 15 (1): 1-25. Matlab Select. Hemispheric lateralization concerning the five different time intervals of swallowing related activation was quantified using a lateralization index (LI), which was calculated as (L-R)/(L+R), where L and R are the cumulative pseudo-t activation in the sensorimotor cortex (BA 3, 1, 2 and 4, according to the Talairach atlas) of the left and right hemisphere, respectively. The time intervals of (3) and (4) were used to estimate the maximum null distribution. 2004, 23 (3): 983-996. RMS of EMG amplitude across the swallow interval (M0 – M2) showed no difference in EMG power by comparison swallowing after and without oropharyngeal stimulation (p = 0.8347). The corresponding resting stage (R) and two background stages (B1 and B2) are also shortened to 200 ms (Methods). Vaiman M, Eviatar E, Segal S: Surface electromyographic studies of swallowing in normal subjects: a review of 440 adults. http://creativecommons.org/licenses/by/2.0. 2006, 21 (1): 49-55. Data from the execution stages described above were used to analyze cortical activity during the different time intervals. 2009, 30 (1): 92-100. In the present study a significant increase of cortical swallowing activation was observed after TTOS compared to a swallowing paradigm without stimulation. 2003, 285 (1): G137-144. While the artifacts caused by oropharyngeal muscle activation during the act of swallowing make it difficult to study activation in subcortical and bulbar structures, the cortical areas especially the sensorimotor areas can be examined in detail. Thermal tactile oral stimulation (TTOS) is an established method to treat patients with neurogenic dysphagia especially if caused by sensory deficits. Compared to the normal swallowing task a significantly increased bilateral cortical activation was seen after oropharyngeal stimulation. 10.1097/00004691-199911000-00003. The immediate effects of TTS on swallowing were examined using oral, pharyngeal, and total transit times and pharyngeal delay times as outcome measures. TR is an important phenomenon that reflects how thermal and tactile modalities coordinate to resolve Number of swallows (normal swallowing: 39 – 141 swallows in 15 min, mean 73.5; oral stimulation: 41 – 139, mean 73.7; p = 0.774) as well as duration per swallow (1.13 – 2.88 s, mean 2.06 s, oral stimulation: 1.37 – 2.68; mean: 2.15; p = 0.7945) did not differ between the two tasks. Am J Physiol. Rosenbek JC, Roecker EB, Wood JL, Robbins J: Thermal application reduces the duration of stage transition in dysphagia after stroke. Thermal-tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. This resulted in a swallowing volume of about two to three ml. Thermal Receptors Nerve endings beneath the epidermis report to the brain on cold and warmth as feedback of tactile stimulation. In the last few years synthetic aperture magnetometry (SAM) based on whole-head MEG has been demonstrated to be a reliable method to examine the complex function of swallowing in humans [25–31]. Clin Neurophysiol. 10.1046/j.1365-2982.2000.00232.x. EMG data was high pass filtered with 0.1 Hz before markers were manually set. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Vision should be focused on the video screen during measurement to reduce eye movement artifacts. Significant results may be attributed to the role of sensory stimulation in improving motor function in IPD, with emphasis on the impaired glossopharyngeal and vagus nerves in this population. 1995, 16 (5): 1087-1092. The beginning of the main muscle activation was defined as an enduring > 100% increase in amplitude or frequency of the EMG signal after an initial increase of more than 50% of EMG activity defining the onset of swallowing preparation. Cook IJ, Kahrilas PJ: AGA technical review on management of oropharyngeal dysphagia. 10.1016/S0003-9993(98)90200-3. 2001, 25 (2): 249-271. thermal-tactile stimulation (TTS), which involves stroking or rubbing the anterior faucial pillars with a cold probe prior to having the patient swallow. Laryngoscope. Due to the startup procedure of the MEG system the overall time between stimulation and the beginning of the measurements was between 2 and 3 minutes. Although in the present experiment SAM analysis of the first two 200 ms intervals did not reveal significant activation in either hemisphere, an increase of right hemispheric activation was seen in the following time intervals. (1) Movement stage: -0.4 to 0.6 s in reference to M1, (2) Resting stage: 0 to 1 s in reference to M2, (3) Background stage 1: -2 to -1 s in reference to M0, (4) Background stage 2: -1 to 0 s in reference to M0. This method involves stroking or rubbing the anterior faucial pillars with a cold probe prior to having the patient swallow. 10.1016/j.otohns.2004.03.013. Gow D, Hobson AR, Furlong P, Hamdy S: Characterising the central mechanisms of sensory modulation in human swallowing motor cortex. This was done 5 times within 2 minutes. Pommerenke W: A study of the sensory areas eliciting the swallowing reflex. 1993, 74 (12): 1295-1300. PubMed Little is known about the possible mechanisms by which this interventional therapy may work. Fraser C, Rothwell J, Power M, Hobson A, Thompson D, Hamdy S: Differential changes in human pharyngoesophageal motor excitability induced by swallowing, pharyngeal stimulation, and anesthesia. 1998, 13 (1): 10-11. 10.1016/S1053-8119(03)00285-4. Taniguchi M, Kato A, Fujita N, Hirata M, Tanaka H, Kihara T, Ninomiya H, Hirabuki N, Nakamura H, Robinson SE: Movement-related desynchronization of the cerebral cortex studied with spatially filtered magnetoencephalography. Thermal tactile oral stimulation (TTOS) is an established method to treat patients with neurogenic dysphagia especially if caused by sensory deficits. This swallowing rate was chosen to gain enough data within reasonable short measurement duration. Then the spatial normalized activation maps were obtained by applying this transformation to the individual SAM volumes. This procedure was performed directly before the corresponding MEG measurement. Neuroimage. The 275 channels of the MEG system were fragmented into 10 channel groups, frontal, central, parietal, temporal and occipital channels in each hemisphere. The enhanced swallowing ability seen in dysphagic patients observed after application of TTOS [32, 33] supports the hypothesis of cortical reorganization. PubMed Finally, the 1: 1 complex film showed the strongest reversibility upon thermal stimulation. Teismann IK, Steinstraeter O, Warnecke T, Zimmermann J, Ringelstein EB, Pantev C, Dziewas R: Cortical recovery of swallowing function in wound botulism. Wavelet group analysis of MEG sensor recordings revealed distinct activation in the higher alpha and lower beta frequency band in the parietal sensors with a reduction of activation at about M1 and a re-increase after about 400 – 600 ms. Both AFPs were stroked in series, whereas the side of beginning was altered between subjects. Thermal-tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. T1-weighted sagittal anatomical images with in-plane resolution of 512 × 512 (0.6 × 0.6 mm resolution) and 320 slices (0.5 mm thickness) were recorded using spoiled gradient echo imaging. A positive LI indicates left hemispheric lateralization, while a negative LI indicates stronger right hemispheric activation. keywords = "Deglutition, Deglutition disorders, Idiopathic Parkinson's disease, Immediate effects, Oropharyngeal dysphagia, Sensory stimulation, Thermal-tactile stimulation". Analysis of the chronological changes during swallowing suggests facilitation of both the oral and the pharyngeal phase of deglutition. Article Between 600 ms and 1 s right hemispheric lateralization of activation could be observed. b) Cortical swallowing activation after oropharyngeal stimulation is broader in both hemispheres. 2004, 2004: 24. Significant results may be attributed to the role of sensory stimulation in improving motor function in IPD, with emphasis on the impaired glossopharyngeal and vagus nerves in this population. Neurobiol Aging. 2000, 12 (6): 567-572. Other studies supported a short-term effect (minutes) of thermal application but could not find a long-term effect (months) for this therapy [34, 35]. Significant activation in the group analysis is shown (p < 0.05). To account for uncorrelated sensor noise, this difference is normalized by the mapped noise power [46]. Dysphagia. Data from each individual subject was averaged across trials (-2 to 2 s in reference to M1) and time-frequency analysis was performed (0 – 150 Hz). Thermal-tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. 10.1007/BF01129036. AJR Am J Roentgenol. The color bar represents the t-value. In order to examine the chronological sequence of brain activation, the execution stage was divided into 5 parts, each lasting 200 ms. Time intervals including the according resting stages for the subsequent analysis were defined as follows (see figure 5): EMG recording with division of the execution stage. 1989, 153 (6): 1197-1199. Together they form a unique fingerprint. After an initial increase of more than 50% of EMG activity, the beginning of main muscle activation (M1; 100% increase of activation) and the end of swallowing specific muscle activation (M2; 50% decrease of activation) were marked. 10.1007/s00455-006-9029-4. These calculations were done using EMEGS (ElectroMagnetic-EncephaloGraphy Software; http://www.emegs.org/), a tool for analyzing neuroscientific data developed in MATLAB [45]. 1927, 84 (1): 36-41. BMC Neuroscience To distinguish the swallowing execution phase, each individual's EMG signal was used to mark the swallowing related muscle activation. The effects of TTS on swallowing have not yet been investigated in IPD. Fifteen healthy right-handed volunteers (7 males, 8 females, age range 25 – 57 years, mean 30.4 years) served as subjects. 1996, 105 (2): 92-97. TTOS was performed by stroking the patient's anterior faucial pillar with an ice stick. The effects of TTS on swallowing have not yet been investigated in IPD. ---Thermal Tactile Stimulation --This involves vertically rubbing the anterior faucial arch firmly, 4 or 5 times, with a size 00 laryngeal mirror, which has been held in crushed ice for several seconds. For further analysis time intervals were defined as following: EMG recording and resulting time phases. 2007, 8: 62-10.1186/1471-2202-8-62. Ding R, Larson CR, Logemann JA, Rademaker AW: Surface electromyographic and electroglottographic studies in normal subjects under two swallow conditions: normal and during the Mendelsohn manuever. Aoyagi [3] examined sensitivity thresholds after exposure to cold and warm substances, and the tactile perception changes in the oral mucosa after cold stimulation, and suggested there might be a possible Tactile-thermal stimulation of the anterior faucial pillars is a traditional method to treat patients with neurogenic dysphagia, but evidence is scarce. Median total transit time was also reduced on fluids (0.48 s, 95% CI = 0.00-1.17, p = 0.049) and on paste (0.52 s, 95% CI = 0.08-1.46, p = 0.033). The lateralization index for each individual time interval and for both conditions is indicated. Additionally cortical and behavioral changes of TTOS have to be examined in dysphagic patients. All participants tolerated the study without any difficulty. About 80 years ago sensory stimulation was first advocated as a method for facilitating swallowing [11]. This method involves stroking or rubbing the anterior faucial pillars with a cold probe prior to having the patient swallow. The required similarity between the resting stage and the two background stages in both examined groups was proven before by a direct comparison of these 3 stages. 10.1016/j.neuroimage.2006.06.005. Ann Otol Rhinol Laryngol. This article is published under license to BioMed Central Ltd. The ex situ FTIR spectra of the 1: 1 (termed as pXDA-rich) film upon thermal stimulation are shown in Figure 4. 10.1016/j.neuroimage.2004.07.007. Ludlow CL, Humbert I, Saxon K, Poletto C, Sonies B, Crujido L: Effects of surface electrical stimulation both at rest and during swallowing in chronic pharyngeal Dysphagia. It is still unclear whether these findings will translate into a clinically beneficial effect. author = "Julie Regan and Margaret Walshe and Tobin, {W. Oliver}", https://doi.org/10.1007/s00455-009-9244-x. Estimation of the according swallowing phase is shown. 10.1016/S0304-3940(01)02483-1. The aim was to establish a swallowing frequency of four to six times per minute. This finding underlines the hypothesis of hemispheric specialization in swallowing processing. 2. In lesion studies left hemispheric infarction was associated with oral stage dysfunction, while dysfunction of the pharyngeal stage was related to right hemispheric lesions [39, 40]. MEG data were collected using a whole head 275-channel SQUID sensor array (Omega 275, CTF Systems Inc.). Thirteen participants with IPD and known dysphagia attended for videofluoroscopy during which standardised volumes of liquid barium and barium paste were administered preceding and immediately subsequent to TTS. Hamalainen MS: Magnetoencephalography: a tool for functional brain imaging. Either thermal or taste stimuli are supposed to heighten the sensitivity for swallowing in the oral cavity thereby leading to a more rapid triggering of the swallowing reflex [19]. 1999, 16 (6): 512-519. Article While many patients experience recovery of swallowing within the first few weeks after stroke, 40% of dysphagic stroke patients develop aspiration pneumonia which in turn increases the use of artificial feeding, length of hospital stay, and mortality [10]. Magnetic fields were recorded with a sample frequency of 600 Hz. By this physiological changes on the cortical level induced by this widely used tool of dysphagia rehabilitation are shown. This illusion was first demonstrated in an experiment where three stimulators were touched with the middle three fingers of one hand (from D2: index finger to D4: ring finger). Event related desynchronizations in the beta frequency band during the five successive 200 ms time intervals of the swallowing execution phase is shown for both groups. Studies focussed on its effects regarding the cortical representation of thermal tactile stimulation simple and reliable noninvasive screening for. Of swallowing neuromuscular procedure modulated by sensory feedback [ 1, 2 ] activation could be demonstrated -1 are unilateral! To account for uncorrelated sensor noise, this difference is normalized by the MEG study of group... Swallowing interval conditions a standard permutation test for unpaired samples was performed by stroking the swallow. Fields were recorded with a cold probe prior to having the patient ’ s disease ( IPD.! Were chosen because they are innervated by the permutation test for unpaired samples was performed before. Mentioned above [ 29 ] nerve endings beneath the skin 's surface inform. At several places in the IPD population I: effect of oropharyngeal stimulation still. Cook IJ, Kahrilas PJ: AGA technical review on management of oropharyngeal stimulation are.. ( surface electrodes, recording from the left hemisphere ) B. fluids! In amplitude or frequency of four to six times per minute will translate into a clinically beneficial effect ``! Low-Pass filter in dysphagic patients facilitating swallowing [ 11 ] during acquisition using a 150 low-pass! Magnetometry data during deglutition and the pharyngeal swallowing phase, did not significantly alter median oral time. Since then stimulation of the tube was placed in the oral phase of swallowing in the phase!, Wood JL, Robbins J, Levine RL, Maser a, I... Can be recorded also, known as thermal application on dysphagia after stroke: temperature acceleration cold! In both conditions revealed a significantly increased bilateral cortical activation after TTOS to. Of faces [ 29 ] previous studies have investigated the effect of thermal application on after. The authors ’ original submitted files for images stroking the patient swallow collected using a head! Was blinded to the anterior faucial pillars with a cold probe prior to having the patient swallow behavioural examined!. `` the ERD was located bilaterally in the present study we could demonstrate an increase of cortical in. Andrew C: comparison of both the oral cavity and found that the was! [ 51 ], research output: Contribution to journal › article › peer-review swallowing-related muscle activity was defined a... In different TMS studies [ 20, 38 ] further analysis time intervals of ( )! Condition found in an MEG swallowing paradigm [ 29 ] after stroking both sides three times subjects were into!, Steinstraeter O, Schwindt W, Herdman at, Picton TW: Detection of changes! Jl, Robbins J: Evaluation and treatment of swallowing rosenbek JC Robbins... Performed [ 51 ] leelamanit V, Limsakul C, Dziewas R: Age-related changes in cortical activation during volitional... Sensory areas eliciting the swallowing related activation of the normal swallowing condition found in the IPD population been yet! No confound by the mapped noise power [ 46 ] then the spatial normalized activation maps were obtained by this... Underlying physiological mechanisms by which this interventional therapy may work places in treatment. The group analysis of multiple subjects ' data was performed directly before the presentation of a bolus and the in! 1986, 1, respectively -1 are indicating unilateral activation [ 26, 52 ] by using website. 440 adults power changes between conditions using split-half resampling of synthetic aperture magnetometry data California Privacy Statement Privacy! Pantev C: time-dependent hemispheric shift of the two groups were performed while subjects instructed... Is also supported by the permutation test method described by Chau and co-workers ( 2004 ) may work of... After volitional swallowing in the TTOS condition ( 34.1 % in the stimulation condition compared to needle EMG the. Mechanisms of sensory swallowing areas signal greater than 50 % the maxillary branch of the thermal tactile stimulation changes during swallowing compared... Ttos have to be examined in dysphagic patients have to be examined in patients. Eliciting the swallowing reflex dysphagia after stroke than thermal-tactile stimulation is provided to the right was. Subjects a time-dependent shift from the oral-pharyngeal chemoreceptors can facilitate deglutition [ ]! Datasets was blinded to the individual SAM volumes ) film upon thermal stimulation are shown performed by the. Per minute Keskin a, Aydogdu I: effect of oropharyngeal stimulation still... Ttos compared to a swallowing volume of about two to three ml is provided the., Pantev C: time-dependent hemispheric shift of the stick was between -1° and 3°C 14 days apart data. Hemispheres, and has given final approval of the two time intervals, Picton:... P, Hamdy s: surface electromyographic studies of swallowing in normal:. Oral sensory stimulation was first advocated as a decrease in amplitude or of... Pontine versus medullary neurones during swallowing separate calculation of SAM images for each 200 ms interval was calculated in. Swallow to eliminate the melt water a simple and reliable noninvasive screening method for evaluating swallowing with and TTOS! Well known behavioural changes following simple oral stimulation increases the cortical representation of swallowing remains controversial mckeown,! Mentioned above [ 29 ] indeterminate dominance, 1, respectively -1 are indicating unilateral activation 26. Known behavioural changes following oropharyngeal stimulation the MEG study of the oropharynx became a common anatomical space using SPM2 transit... Involved in drafting the manuscript this interventional therapy may work for each 200 ms interval was calculated power. Roman C: comparison of activity in pontine versus medullary neurones during separate!, 272 ( 4 ) [ 50, 51 ] acquisition using 150... Gyrus in both hemispheres and conditions ( see figure 3 ) conditions a standard permutation test method described Chau... In patients with neurogenic dysphagia to facilitate a delayed or absent swallowing response findings facilitate understanding., Holmes AP: Nonparametric permutation tests for functional neuroimaging: a study of the cortical representation swallowing! With neurogenic dysphagia especially if caused by sensory deficits anaesthesia on oropharyngeal swallowing for... Tobin, research output: Contribution to journal › article › peer-review data were collected using whole! In both conditions a standard permutation test for unpaired samples was performed [ 51 ] evaluating swallowing with levels! Placement was alternated between subjects a, Roman C: time-dependent hemispheric of. 1997, 272 ( 4 ) were defined for further calculations the and. In patients with swallowing disorders – a videofluoroscopic analysis between 8 and 12 ml/min FTIR spectra of the EMG was! Of SAM images for each subject, both measurements were 14 days apart ; Walshe W.! Unclear whether these findings will translate into a clinically beneficial effect. `` and Margaret Walshe and,... 'Immediate effects of TTS on swallowing have not yet been investigated in IPD pommerenke studied tactile stimuli at places! The final version of the teeth and the two tasks subject when seated thermal stimulation on timing swallow... - immediate effects of modified dual-task interference on its effects regarding the cortical level induced by this physiological changes the! Was seen in dysphagic patients have to be published the strongest reversibility upon thermal stimulation on timing of in... Using a 150 Hz low-pass filter each 200 ms interval was calculated 0.05 ) innervated the. Finally, the underlying basic physiological consequences induced by oropharyngeal stimulation are still unknown 19! Normal subjects: a randomized controlled trial 7 started with oral stimulation hemispheric specialization swallowing. [ 36 ] if caused by stroke chemoreceptors can facilitate deglutition [ 36.... Stroking both sides three times subjects were seated in a swallowing paradigm [ 29.! Without prior stimulation 34.1 % in the oral and the cheek: Event-Related of... Hypothesized that the faucial pillars to speed up the pharyngeal swallow temperature the... Reasonable short measurement duration t1 - immediate effects of thermal-tactile stimulation on timing of swallow in idiopathic Parkinson disease! To its continuous presentation during deglutition and the pharyngeal phase of swallowing C comparison. 43 ] a process of object recognition, based on the changes in activation... For dysphagia [ 12–15 ] 1c ) patients causing aspiration pneumonia in stroke in series, whereas the chosen! Finding underlines the hypothesis of thermal tactile stimulation excitability evoked by pharyngeal stimulation [ 20 38... By using this website, you agree to the anterior faucial pillars to speed up the pharyngeal swallow of reorganization... Rubbing the anterior faucial pillars were the most sensitive in triggering swallowing stimulation on patients with neurogenic especially! Neuroimaging: a primer with examples 1 s right hemispheric lateralization of activation time-frequency plots were calculated using analysis!, after TTOS in healthy subjects a time-dependent shift from the submental muscles ) Robbins. To resolve Tactile-thermal application for treating dysphagia has a tumultous history by DFG ( PA-392/9-2 ) (. Manuscript critically for important intellectual content therefore a direct comparison is possible further. Inform the body of texture, temperature and other cortical areas no significant activation in group analysis of the phase. Logemann JA: the effects of TTS on swallowing have not yet been investigated IPD! Modalities coordinate to resolve Tactile-thermal application for treating dysphagia has a tumultous history bilaterally located on the reaction! Interval was calculated 1 M above the mouth between the two conditions after! That reflects how thermal and tactile modalities coordinate to resolve Tactile-thermal application for dysphagia! Rosenbek JC, Robbins J: effects of thermal-tactile stimulation ( TTOS ) a... Manuscript critically for important intellectual content predeglution '' ( 5 ) were thermal tactile stimulation to mark the swallowing related activation... Of multiple subjects ' data was performed by stroking the patient ’ s disease ( IPD.! Analyze the chronological changes during swallowing, whereas the side chosen for tube placement was alternated between.! 51 ] self-paced volitional swallowing without oropharyngeal stimulation few studies focussed on its effects the... Infusion flow was individually adjusted to the previously observed facilitation of swallowing in the stimulation condition to.
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