scholarly journals Proprioceptive Stimulation of the Articulatory Muscles for Restoration of Speech and Swallowing

Doctor Ru ◽  
2020 ◽  
Vol 19 (9) ◽  
pp. 39-44
Author(s):  
E.Yu. Mozheiko ◽  
◽  
S.V. Prokopenko ◽  
Ya.V. Yasinskaya ◽  
Yu.O. Eremina ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Clinical Case ◽  
Speech Therapy ◽  
Muscle Tone ◽  
Positive Effects ◽  
Afferent Nerves ◽  
Key Points ◽  
Proprioceptive Stimulation ◽  
Proprioceptive Afferents ◽  
Stimulation Of

Objective of the Paper: To assess the possibility of supplementing standard speech therapy protocols for dysarthria patients in the acute period of ischemic stroke, with techniques for stimulating the afferent nerves of the mouth and articulatory organs via a proprietary training mask designed to improve proprioception. Key Points: The paper describes a clinical case of using the training mask. Repeated speech evaluations and changes in scores on scales for assessing the severity of speech problems and dysarthria showed that stimulation of the proprioceptive afferents in the mouth and articulatory organs improved mimetic muscle function and speech articulation, contributed to normalizing muscle tone in the articulatory muscles, and reduced speech hesitation. Conclusion: The clinical case described in the paper demonstrates the positive effects of a training mask designed for proprioceptive stimulation of the articulatory muscles in patients with acute ischemic stroke. These results will be of interest to neurologists, speech therapists, and specialists in neurorehabilitation. Keywords: dysarthria, pseudobulbar disorders, extrapyramidal disorders, training mask, ischemic stroke.

Electrophysiological Assessment of Spinal Circuits in Spasticity by Direct Dorsal Root Stimulation

Neurosurgery ◽  
1979 ◽  
Vol 4 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Victor Aldo Fasano ◽  
Giancarlo Barolat-Romana ◽  
Sergio Zeme ◽  
Angelo Sguazzi
Keyword(s):  
Spinal Cord ◽  
Muscle Tone ◽  
Basic Mechanism ◽  
Common Finding ◽  
Inhibitory Processes ◽  
Positive Effects ◽  
Dorsal Roots ◽  
Spinal Roots ◽  
Dorsal Spinal ◽  
Stimulation Of

Abstract Experimental researchers have shown that, because of normal inhibitory processes, repetitive orthodromic stimulation of the dorsal spinal roots induces a depression of the reflex discharge in the spinal motoneurons that is a function of the stimulation rate. Because a lack of inhibitory processes is considered to be the basic mechanism of spasticity, intraoperative stimulation of dorsal spinal roots from L-1 to S-1 bilaterally was performed in 80 patients affected by cerebral palsy. In these patients spasticity (exaggerated stretch reflexes, marked increase of proprioceptive reflexes, and clonus) was the main symptom. We stimulated the dorsal roots adjacent to the spinal cord and recorded motor responses by electromyogram (EMG) in the corresponding muscle groups. The most important findings were that: (a) variable inhibition (diminished, increased, or normal) was encountered in the spinal circuits of the spastic patient; and (b) the individual roots and rootlets can have different effects upon segmentary output. The absence of normal inhibitory processes was the most common finding; surgical sectioning of the corresponding roots resulted in immediate reduction in muscle tone in the related muscles. Selecting the dorsal roots for section results in a remarkable reduction of negative side effects that may follow total or random rhizotomy (marked hypotonia, ataxia, sensory defects) and of the percentage of late recurrences. This procedure results in additional positive effects at segmentary and suprasegmentary levels. These results confirm the idea that the basic mechanism of spasticity is a central defect in the traffic regulation of peripheral afferents as they are transmitted to the spinal cord. This defect causes segmentary and suprasegmentary adaptive reactions that extend the negative outcome of the local increase of muscle tone.

Safety And Preliminary Efficacy of Magnetic Stimulation of Pelvic Floor with Hifem Technology in Urinary Incontinence

2018 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Urinary Incontinence ◽  
Pelvic Floor ◽  
Magnetic Stimulation ◽  
Muscle Tone ◽  
Pelvic Floor Muscle ◽  
Neuromuscular Control ◽  
Ultrasound Elastography ◽  
Functional Evaluation ◽  
Muscle Injuries ◽  
Stimulation Of

Introduction: BTL EMSELLA™ utilizes High-Intensity Focused Electromagnetic technology (HIFEM) to cause deep pelvic floor muscles stimulation and restoration of the neuromuscular control. Key effectiveness is based on focused electromagnetic energy, in-depth penetration and stimulation of the entire pelvic floor area. A single BTL EMSELLA™ session brings thousands of supramaximal pelvic floor muscle contractions, which are extremely important in muscle reeducation of incontinent patients. Objective: Prospective study to evaluate the safety and preliminary effectiveness of the use of BTL EMSELLA magnetic stimulation in urinary incontinence. Method: Thirty-two patients with light and moderate urinary incontinence were recruited to perform 6 sessions of BTL EMSELLA during three weeks of initial treatment. Follow-up after three months. The patients received sessions lasting 28 minutes, completing the different treatment protocols. Initially the patients underwent a quality of life test before and after treatment, evaluation with advanced ultrasound using elastography to measure the initial tissue's elasticity and be able to compare after treatment, clinical functional evaluation and urodynamic test. Results: No adverse reactions were observed. All the patients finished the treatment sessions. Two patients reported increased pain after treatment in the first session corresponding to a VAS scale greater than 5 with duration greater than three hours. The treatment was highly satisfactory in 84,4% of the patients. After the first three months the improvement was maintained in 77% of the patients. No muscle injuries were observed. Elastographic changes and improvement of muscle tone were detected by advanced ultrasound (elastography) in 100% of patients. Conclusions: BTL EMSELLA is safe, well tolerated and effective for the treatment of mild and moderate urinary incontinence. The observed elastographic changes demonstrate the improvement of pelvic floor muscle tone after treatment. A reduction in the symptoms of urinary incontinence was demonstrated. Recommendations: Continue increasing the number of cases for research and increase the variables that we have decided to incorporate in the next research section such as MRI and pressure calculation.

ANALYSIS OF THE STRUCTURE AND DYNAMICS OF VERBAL FUNCTIONS FOR THE FIRST YEAR AFTER ISCHEMIC STROKE

2019 ◽  
pp. 19-23
Keyword(s):  
Ischemic Stroke ◽  
Speech Therapy ◽  
Positive Impact ◽  
Speech Disorders ◽  
First Year ◽  
Structure And Dynamics ◽  
Speech Therapist ◽  
Late Recovery ◽  
Verbal Functions ◽  
Stationary Period

The results of psycho-correction speech therapy are analyzed in dynamics in 78 patients with varying severity and various forms of speech disorders in the early and late recovery periods of ischemic stroke. The effectiveness of conducting classes during the stay of patients in a neurological hospital and the positive impact of these exercises in the inpatient period (outpatient classes, classes at home with a speech therapist and trained relatives) are shown. Patients who did not conduct speech recovery classes during the inter-stationary period showed a decrease in speech activity, in some even a negative dynamic.

Hypoglycemic Hemiparesis Masquerading As Ischemic Stroke: When Guideline Fails

2020 ◽  
Vol 15 (4) ◽  
pp. 420-422
Author(s):  
Dhruvkumar M. Patel ◽  
Mukundkumar V. Patel ◽  
Jayanti K. Gurumukhani ◽  
Maitri M. Patel ◽  
Himal J. Mahadevia ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Thrombolytic Therapy ◽  
Neurological Deficit ◽  
Clinical Case ◽  
Complete Recovery ◽  
Acute Onset ◽  
Diabetic Patients ◽  
Focal Neurological Deficit ◽  
Random Blood Sugar ◽  
Resident Doctor

Background: Hypoglycemia may rarely present as hemiparesis and sometimes it is difficult to differentiate from ischemic stroke. When random blood sugar (RBS) value is between 50 and 80 mg % in patients presenting with focal neurological deficit, no guideline exists to consider the possibility of hypoglycemia before initiating thrombolytic therapy. Clinical Case: A 58-year-old male, who was a known case of diabetes and hypertension, was brought to the emergency room with acute onset of right hemiparesis and dysarthria of 90 minutes duration. His NIHSS Score was 9, blood pressure was 150/90 mm of Hg and RBS was 79 mg% on admission. His CT scan brain was normal and was considered for thrombolysis. Resident doctor not aware of previous sugar repeated RBS before thrombolysis which was surprisingly 60 mg% 60 minutes after the first RBS. Even though he was a candidate for thrombolysis, intravenous 25 % dextrose was administered considering the possibility of hypoglycemia. He made a complete recovery within 20 minutes and thrombolytic therapy was withheld. : In Diabetic patients with focal neurological deficit and RBS less than 80 mg% on admission, RBS should be rechecked and in appropriate cases should be challenged with IV dextrose considering the possibility of hypoglycemia before commencing thrombolytic therapy.

scholarly journals The cypsela (achene) of Echinacea purpurea as a diffusion unit of a community of microorganisms

2021 ◽  
Vol 105 (7) ◽  
pp. 2951-2965
Author(s):  
Massimiliano Cardinale ◽  
Marian Viola ◽  
Elisangela Miceli ◽  
Teresa Faddetta ◽  
Anna Maria Puglia ◽  
...  
Keyword(s):  
Respiratory Infections ◽  
Active Role ◽  
Echinacea Purpurea ◽  
Endophytic Microorganisms ◽  
Host Membrane ◽  
Key Points ◽  
Endophytic Bacterial Community ◽  
Pharmaceutical Properties ◽  
Stimulation Of

AbstractEchinacea purpurea is a plant cultivated worldwide for its pharmaceutical properties, mainly related to the stimulation of the immune system in the treatment of respiratory infections. The cypselas (fruits) of E. purpurea were examined in order to investigate the presence, localization and potential function(s) of endophytic microorganisms. Electron and confocal microscopy observations showed that three different components of microorganisms were associated to cypselas of E. purpurea: (i) one endocellular bacterial component in the cotyledons, enclosed within the host membrane; (ii) another more generic bacterial component adhering to the external side of the perianth; and (iii) a fungal component inside the porous layer of the perianth, the woody and porous modified residual of the flower, in the form of numerous hyphae able to cross the wall between adjacent cells. Isolated bacteria were affiliated to the genera Paenibacillus, Pantoea, and Sanguibacter. Plate tests showed a general resistance to six different antibiotics and also to an antimicrobial-producing Rheinheimera sp. test strain. Finally, microbiome-deprived E. purpurea seeds showed a reduced ability to germinate, suggesting an active role of the microbiome in the plant vitality. Our results suggest that the endophytic bacterial community of E. purpurea, previously found in roots and stem/leaves, might be already carried at the seed stage, hosted by the cotyledons. A further microbial fungal component is transported together with the seed in the perianth of the cypsela, whose remarkable structure may be considered as an adaptation for fungal transportation, and could influence the capability of the seed to germinate in the soil.Key Points• The fruit of Echinacea purpurea contains fungi not causing any damage to the plant.• The seed cotyledons contain endocellular bacteria.• Seed/fruit deprived of the microbiome showed a reduced ability to germinate.

scholarly journals The interaction between two trains of impulses converging on the same motoneurone

1929 ◽  
Vol 105 (738) ◽  
pp. 363-371 ◽  
Keyword(s):  
Mechanical Effect ◽  
The Other ◽  
Muscle Fibres ◽  
Flexor Muscle ◽  
Afferent Pathways ◽  
Afferent Nerves ◽  
Maximal Stimulation ◽  
The Common ◽  
The Relationship ◽  
Stimulation Of

It was shown in an earlier paper (7) that if maximal stimulation of either of two different afferent nerves can reflexly excite fractions of a given flexor muscle, there are generally, within the aggregate of neurones which innervate that muscle, motoneurones which can be caused to discharge by either afferent (i. e., motoneurones common to both fractions). The relationship which two such afferents bear to a common motoneurone was shown, by the isometric method of recording contraction, to be such that the activation of one afferent, at a speed sufficient to cause a maximal motor tetanus when trans­mitted to the muscle fibres, caused exclusion of any added mechanical effect when the other afferent was excited concurrently. This default in mechanical effect was called “occlusion.” Occlusion may conceivably be due to total exclusion of the effect of one afferent pathway on the common motoneurone by the activity of the other; but facilitation of the effect of one path by the activation of the other when the stimuli were minimal suggests that, in some circumstances at least, the effect of each could augment and summate with th at of the other at the place of convergence of two afferent pathways. Further investigation, using the action currents of the muscle as indication of the nerve impulses discharged by the motoneurone units, has now given some information regarding the effect of impulses arriving at the locus of convergence by one afferent path when the unit common to both is already discharging in response to impulses arriving by the other afferent path. Our method has been to excite both afferent nerves in overlapping sequence by series of break shocks at a rapid rate and to examine the action currents of the resulting reflex for evidence of the appearance of the rhythm of the second series in the discharge caused by the first when the two series are both reaching the motoneurone.

Effects of pharyngeal lubrication on the opening of obstructed upper airway

1992 ◽  
Vol 72 (6) ◽  
pp. 2311-2316 ◽  
Author(s):  
H. Miki ◽  
W. Hida ◽  
Y. Kikuchi ◽  
T. Chonan ◽  
M. Satoh ◽  
...  
Keyword(s):  
Hypoglossal Nerve ◽  
Muscle Tone ◽  
Upper Airway ◽  
Intraluminal Pressure ◽  
Lower Airway ◽  
Before And After ◽  
Airway Opening ◽  
Cervical Trachea ◽  
Artificial Surfactant ◽  
Stimulation Of

We examined the effect of electrical stimulation of the hypoglossal nerve and pharyngeal lubrication with artificial surfactant (Surfactant T-A) on the opening of obstructed upper airway in nine anesthetized supine dogs. The upper airway was isolated from the lower airway by transecting the cervical trachea. Upper airway obstruction was induced by applying constant negative pressures (5, 10, 20, and 30 cmH2O) on the rostral cut end of the trachea. Peripheral cut ends of the hypoglossal nerves were electrically stimulated by square-wave pulses at various frequencies from 10 to 30 Hz (0.2-ms duration, 5–7 V), and the critical stimulating frequency necessary for opening the obstructed upper airway was measured at each driving pressure before and after pharyngeal lubrication with artificial surfactant. The critical stimulation frequency for upper airway opening significantly increased as upper airway pressure became more negative and significantly decreased with lubrication of the upper airway. These findings suggest that greater muscle tone of the genioglossus is needed to open the occluded upper airway with larger negative intraluminal pressure and that lubrication of the pharyngeal mucosa with artificial surfactant facilitates reopening of the upper airway.

Connections between thoraco-coxal proprioceptive afferents and motor neurons in the locust

2000 ◽  
Vol 203 (3) ◽  
pp. 435-445
Author(s):  
M. Wildman
Keyword(s):  
Electrical Stimulation ◽  
Sensory Neurons ◽  
Motor Neurons ◽  
Chordotonal Organ ◽  
Synaptic Connections ◽  
Afferent Neurons ◽  
Postsynaptic Potentials ◽  
The Common ◽  
Proprioceptive Afferents ◽  
Stimulation Of

The position of the coxal segment of the locust hind leg relative to the thorax is monitored by a variety of proprioceptors, including three chordotonal organs and a myochordotonal organ. The sensory neurons of two of these proprioceptors, the posterior joint chordotonal organ (pjCO) and the myochordotonal organ (MCO), have axons in the purely sensory metathoracic nerve 2C (N2C). The connections made by these afferents with metathoracic motor neurons innervating thoraco-coxal and wing muscles were investigated by electrical stimulation of N2C and by matching postsynaptic potentials in motor neurons with afferent spikes in N2C. Stretch applied to the anterior rotator muscle of the coxa (M121), with which the MCO is associated, evoked sensory spikes in N2C. Some of the MCO afferent neurons make direct excitatory chemical synaptic connections with motor neurons innervating the thoraco-coxal muscles M121, M126 and M125. Parallel polysynaptic pathways via unidentified interneurons also exist between MCO afferents and these motor neurons. Connections with the common inhibitor 1 neuron and motor neurons innervating the thoraco-coxal muscles M123/4 and wing muscles M113 and M127 are polysynaptic. Afferents of the pjCO also make polysynaptic connections with motor neurons innervating thoraco-coxal and wing muscles, but no evidence for monosynaptic pathways was found.

Functional anatomy of the vagal innervation of the cervical trachea of the dog

2000 ◽  
Vol 89 (1) ◽  
pp. 139-142 ◽  
Author(s):  
Robert L. Coon ◽  
Patrick J. Mueller ◽  
Philip S. Clifford
Keyword(s):  
Smooth Muscle ◽  
Vagus Nerve ◽  
Neural Control ◽  
Muscle Tone ◽  
Cuff Pressure ◽  
Vagal Innervation ◽  
Cervical Trachea ◽  
The Right ◽  
Left Vagus ◽  
Stimulation Of

The canine cervical trachea has been used for numerous studies regarding the neural control of tracheal smooth muscle. The purpose of the present study was to determine whether there is lateral dominance by either the left or right vagal innervation of the canine cervical trachea. In anesthetized dogs, pressure in the cuff of the endotracheal tube was used as an index of smooth muscle tone in the trachea. After establishment of tracheal tone, as indicated by increased cuff pressure, either the right or left vagus nerve was sectioned followed by section of the contralateral vagus. Sectioning the right vagus first resulted in total loss of tone in the cervical trachea, whereas sectioning the left vagus first produced either a partial or no decrease in tracheal tone. After bilateral section of the vagi, cuff pressure was recorded during electrical stimulation of the rostral end of the right or left vagus. At the maximum current strength used, stimulation of the left vagus produced tracheal constriction that averaged 28.5% of the response to stimulation of the right vagus (9.0 ± 1.8 and 31.6 ± 2.5 mmHg, respectively). In conclusion, the musculature of cervical trachea in the dog appears to be predominantly controlled by vagal efferents in the right vagus nerve.

Synaptic transmission in the chronically decentralized middle cervical and stellate ganglia of the dog

1983 ◽  
Vol 61 (10) ◽  
pp. 1149-1155 ◽  
Author(s):  
J. A. Armour
Keyword(s):  
Central Nervous System ◽  
Action Potentials ◽  
Autonomic Nerves ◽  
Autonomic Ganglia ◽  
Afferent Nerves ◽  
Stellate Ganglia ◽  
Compound Action Potentials ◽  
The Central Nervous System ◽  
Compound Action ◽  
Stimulation Of

Afferent stimulation of one thoracic cardiopulmonary nerve generated compound action potentials in the efferent axons of other ipsilateral cardiopulmonary nerves in dogs, 14 days after their thoracic autonomic ganglia had been decentralized. The compound action potentials were influenced by the frequency of activation and (in 5 of 12 dogs) by pharmacological autonomic blocking agents (hexamethonium, atropine, phentolamine, and propranolol). Moreover, they were abolished transiently when chymotrypsin was injected locally into the ganglia, and extendedly when manganese was injected. Thus, synapses that can be activated by stimulation of afferent nerves exist in chronically decentralized thoracic autonomic nerves and ganglia. It is proposed that regulation of the heart and lungs occurs in part via thoracic autonomic neural elements independent of the central nervous system.

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