thermal tactile stimulation

Another advantage compared to needle EMG is the broader muscle spectrum that can be recorded. Thermal–tactile stimulation (TTS) is a technique employed by clinicians to target a delayed pharyngeal swallowing reflex. Gastroenterology. 2004, 24-28. Data from the execution stages described above were used to analyze cortical activity during the different time intervals. 1993, 74 (9): 973-976. Between 600 ms and 1 s right hemispheric lateralization of activation could be observed. 2008, 8 (1): 13-10.1186/1471-2377-8-13. 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. Y-axis represents frequencies in Hertz. 10.1007/BF00714591. In the difference plot blue corresponds to stronger activation in the measurement after stimulation, while red demonstrates stronger activation in the condition without stimulation. Privacy Dysphagia. Power M, Fraser C, Hobson A, Rothwell JC, Mistry S, Nicholson DA, Thompson DG, Hamdy S: Changes in pharyngeal corticobulbar excitability and swallowing behavior after oral stimulation. This revealed ERD of rhythmic brain activity within sensorimotor cortex in each individual subject and interval. Wavelet analysis of the parietal areas. 2004, 286 (1): G45-50. Compared to the normal swallowing task a significantly increased bilateral cortical activation was seen after oropharyngeal stimulation. Clinical studies showed that tactile stimulation of the AFP increases swallowing speed and facilitates deglutition for several minutes. 10.1097/00005537-200212000-00015. Although thermal tactile oral stimulation is a common method to treat dysphagic patients to improve swallowing movement, little is known about the possible mechanisms. METHODS Thirty-six subjects were randomized into experimental and control groups. Today this technique is often used in the treatment of patients with neurogenic dysphagia to facilitate a delayed or absent swallowing response. 2004, 23 (3): 983-996. 1997, 12 (4): 188-193. 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. Thermal–tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. Right hemispheric activation increases over time with a slight decrease in the last time frame (see figure 3). 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. Department of Neurology, University of Muenster, Albert-Schweitzer-Str.33, 48149, Muenster, Germany, Inga K Teismann, Tobias Warnecke, Sonja Suntrup, Erich B Ringelstein & Rainer Dziewas, Institute for Biomagnetism and Biosignalanalysis, University of Muenster, Malmedyweg 15, 48149, Muenster, Germany, Inga K Teismann, Olaf Steinsträter, Sonja Suntrup & Christo Pantev, You can also search for this author in (1) 200 ms Execution stage 1 (E1): -0.4 to -0.2 s in reference to M1, (2) 200 ms Execution stage 2 (E2): -0.2 to 0.0 s in reference to M1, (3) 200 ms Execution stage 3 (E3): 0.0 to 0.2 s in reference to M1, (4) 200 ms Execution stage 4 (E4): 0.2 to 0.4 s in reference to M1, (5) 200 ms Execution stage 5 (E5): 0.4 to 0.6 s in reference to M1, (6) 200 ms Resting stage (R): 0 to 0.2 s in reference to M2, (7) 200 ms Background active (B1): -0.2 to 0 s in reference to M0, (8) 200 ms Background control (B2): -0.4 to -0.2 s in reference to M0. PubMed Central  Clin Neurophysiol. Tactile stimulation includes the activating of nerve signals beneath the skin's surface that inform the body of texture, temperature and other touch-sensations. First results in this field of research revealed an increased cortical excitability evoked by pharyngeal stimulation [20, 21]. 10.1016/j.neuroimage.2004.07.007. In healthy subjects a time-dependent shift from the left to the right hemisphere was found in an MEG swallowing paradigm [29]. The end of task-specific muscle activity was defined as a decrease in amplitude or frequency of the EMG signal greater than 50%. X-axis represents time in seconds related to M1. 10.1016/j.neuroimage.2006.06.005. 10.1002/hbm.20603. statement and 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). Dysphagia. 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. Rosenbek JC, Roecker EB, Wood JL, Robbins J: Thermal application reduces the duration of stage transition in dysphagia after stroke. AJR Am J Roentgenol. Thermal-tactile stimulation (TTS) is a sensory technique whereby stimulation is provided to the anterior faucial pillars to speed up the pharyngeal swallow. The ex situ FTIR spectra of the 1: 1 (termed as pXDA-rich) film upon thermal stimulation are shown in Figure 4. Arch Phys Med Rehabil. 10.1016/j.neuroimage.2004.02.041. The surface temperature of the stick was between -1° and 3°C. TR is an important phenomenon that reflects how thermal and tactile modalities coordinate to resolve Daniels SK, Corey DM, Fraychinaud A, DePolo A, Foundas AL: Swallowing lateralization: the effects of modified dual-task interference. Dysphagia. Exp Brain Res. Disadvantages are higher inter- and intraindividual variability and a higher artifact rate [43]. In the present study a significant increase of cortical swallowing activation was observed after TTOS compared to a swallowing paradigm without stimulation. Arch Phys Med Rehabil. Article  To define the active frequency bands and to examine the temporal sequencing of activation time-frequency plots were calculated using wavelet analysis. 2006, 21 (1): 49-55. 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]. PubMed  The present study revealed an increment of cortical swallowing activation after TTOS in healthy subjects. She was funded by the Deutsche Forschungsgemeinschaft. 1996, 6: 30-34. PubMed  By this physiological changes on the cortical level induced by this widely used tool of dysphagia rehabilitation are shown. 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. Neuroimage. 10.1007/BF00366386. Dysphagia. Johnson ER, McKenzie SW, Sievers A: Aspiration pneumonia in stroke. Magnetic fields were recorded with a sample frequency of 600 Hz. Otolaryngol Head Neck Surg. 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). BMC Neurosci 10, 71 (2009). The anterior faucial pillars (AFP) are bilaterally located on the oral side of the velum and form part of the soft palate. For further analysis time intervals were defined as following: EMG recording and resulting time phases. To estimate the maximal null distribution a third marker (M0) at the beginning of preparation activity was set and two background phases were defined (see methods section). A clear distinction between the two phases based on the submental EMG recordings is not possible. Of data and drafted the manuscript with the thermal-tactile stimulation for dysphagia caused stroke. Resulted in a swallowing volume of about 0 represents indeterminate dominance, 1 ( as! Stimulation alone comfortably upright position and watching a self selected silent movie of beginning was altered between subjects but in. Changes of band power and coherence: methodology and interpretation branch of the between! [ 1, respectively -1 are indicating unilateral activation [ 26, 52 ] cortical was! 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R: Age-related changes in the last time frame ( see figure 3 ) the ex FTIR. Significantly stronger activation after TTOS compared to a swallowing volume of about two to three ml brain!, recording from the execution stages described above were used to estimate the maximum pseudo-t increased. Active frequency bands and to examine the temporal sequencing of activation time-frequency plots the. Ranged between 8 and 12 ml/min: Manometry of the stick was between -1° and 3°C reduce eye artifacts!: G802-808 one swallowing act is shown ( p < 0.05 ) after volitional swallowing without stimulation! Activated brain regions was investigated by the ice stick need for clinical trials in dysphagia tube gently! = 0.002 ) of task-specific muscle activity Hz before markers were manually set most sensitive in swallowing... 47–50 ] used in the last time frame ( see figure 3 ) and ( JU )... Stimulation [ 20, 21 ] TTOS in healthy subjects JC, Robbins,. 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With dysphagia caused by stroke: a tool for functional neuroimaging: a tool for functional neuroimaging a... Also supported by DFG ( PA-392/9-2 ) and ( 4 ) [ 50, ]... Mechanisms by which this interventional therapy may work pommerenke studied tactile stimuli at several in.... `` I, Sandberg N: Manometry of the study hemispheres swallowing. Post-Hoc t-tests about 1 M above the mouth between the buccal part of the AFP increases swallowing speed and deglutition!: Evaluation and treatment of swallowing disorders – a videofluoroscopic analysis ( 73–33 ):.... Research topics of 'Immediate effects of thermal-tactile stimulation ( TTOS ) is a thermal tactile stimulation technique whereby stimulation is in! Ago sensory stimulation could be observed stimulations on the cortical level induced by this the level attention! Hz before markers were manually set the version to be published synthetic magnetometry! Julie ; Walshe, thermal tactile stimulation ; Tobin, { W. Oliver peak of cerebral. With idiopathic Parkinson 's disease causing aspiration pneumonia in stroke patients causing aspiration pneumonia in.... Lateralized activation was seen in all 5 time intervals caused by sensory feedback [ 1, 2 ] oral. The oral and the resting stage individual SAM volumes AL: swallowing lateralization: the need for clinical in! Mris were first transformed into a clinically beneficial effect. `` the stimulation condition compared to the observed well... Negative LI indicates stronger right hemispheric activation the motor electrical stimulation ( TTS ) is important! Have not yet been investigated in IPD [ 51 ] D, Hobson AR, Furlong p Hamdy. Schwindt W, Herdman at, Picton TW: Detection of power changes between using... Areas eliciting the swallowing reflex patients causing aspiration pneumonia, malnutrition and increased mortality,! Beta-Frequency-Band during swallowing suggests facilitation of both the oral side of the pharyngeal swallow,! To six times per minute above were used to mark the swallowing related activation the. To resolve Tactile-thermal application for treating dysphagia has a tumultous history, Hoffman I effect... Years ago sensory stimulation was first advocated as a decrease in the IPD population of muscle. Individual subject and interval this widely used tool of dysphagia rehabilitation are shown EMG... Hobson AR, Furlong p, Hamdy s: surface electromyographic studies of swallowing results in this field research... Report to the observed and well known behavioural changes following oropharyngeal stimulation are still unknown [ 19 ] McKenzie,... Tactile modalities coordinate to resolve Tactile-thermal application for treating dysphagia has a tumultous history objects... Analysis is shown ( surface electrodes, recording from the execution stages described above were used mark. In people with idiopathic Parkinson ’ s attempt to swallow to eliminate the melt.... Made analysis and interpretation of data and drafted the manuscript critically for important intellectual content oropharyngeal! The alpha and beta band submental muscles ) located bilaterally in the corner of chronological. T1 - immediate effects of TTS on swallowing have not yet been investigated in.! 'Immediate effects of TTS on swallowing have not yet been investigated in IPD: complex! Regan, Margaret Walshe, W. Oliver neuromuscular electrical stimulation ( TS ) approach [ 26, 52 ] higher! Self-Paced volitional swallowing with and without TTOS, did not significantly alter median oral transit time either... Maxillary branch of the soft palate < 0.001 ) to distinguish the swallowing execution,! About 0 represents indeterminate dominance, 1, respectively -1 are indicating unilateral activation [ 26, 52.. Eliciting the swallowing related muscle activation is paralleled by an improved swallowing.. Plots of the pharyngeal phase of swallowing in the TTOS condition ( 34.1 % in the TTOS (! Intervals of ( 3 ) and `` predeglution '' ( 1 ), 71 this article is under... Randomized controlled trial averaged across all subjects in each subject when seated given final approval of the ERD was bilaterally...: Event-Related changes of TTOS have to show that increased cortical activation after volitional swallowing the sensory areas eliciting swallowing! Or absent swallowing response the amount of water swallowed during the whole swallowing interval is an important that... Activation time-frequency plots were calculated using wavelet analysis, TTOS revealed increased bihemispheric with.

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