scholarly journals Modulation of muscle responses evoked by transcranial magnetic stimulation during the acquisition of new fine motor skills

1995 ◽  
Vol 74 (3) ◽  
pp. 1037-1045 ◽  
Author(s):  
A. Pascual-Leone ◽  
D. Nguyet ◽  
L. G. Cohen ◽  
J. P. Brasil-Neto ◽  
A. Cammarota ◽  
...  

1. We used transcranial magnetic stimulation (TMS) to study the role of plastic changes of the human motor system in the acquisition of new fine motor skills. We mapped the cortical motor areas targeting the contralateral long finger flexor and extensor muscles in subjects learning a one-handed, five-finger exercise on the piano. In a second experiment, we studied the different effects of mental and physical practice of the same five-finger exercise on the modulation of the cortical motor areas targeting muscles involved in the task. 2. Over the course of 5 days, as subjects learned the one-handed, five-finger exercise through daily 2-h manual practice sessions, the cortical motor areas targeting the long finger flexor and extensor muscles enlarged, and their activation threshold decreased. Such changes were limited to the cortical representation of the hand used in the exercise. No changes of cortical motor outputs occurred in control subjects who underwent daily TMS mapping but did not practice on the piano at all (control group 1). 3. We studied the effect of increased hand use without specific skill learning in subjects who played the piano at will for 2 h each day using only the right hand but who were not taught the five-finger exercise (control group 2) and who did not practice any specific task. In these control subjects, the changes in cortical motor outputs were similar but significantly less prominent than in those occurring in the test subjects, who learned the new skill.(ABSTRACT TRUNCATED AT 250 WORDS)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Severin Schramm ◽  
Lucia Albers ◽  
Sebastian Ille ◽  
Axel Schröder ◽  
Bernhard Meyer ◽  
...  

AbstractNavigated transcranial magnetic stimulation (nTMS) over the supplementary motor area (SMA) may impact fine motor skills. This study evaluates different nTMS parameters in their capacity to affect fine motor performance on the way to develop an SMA mapping protocol. Twenty healthy volunteers performed a variety of fine motor tests during baseline and nTMS to the SMA using 5 Hz, 10 Hz, and theta-burst stimulation (TBS). Effects on performance were measured by test completion times (TCTs), standard deviation of inter-tap interval (SDIT), and visible coordination problems (VCPs). The predominant stimulation effect was slowing of TCTs, i.e. a slowdown of test performances during stimulation. Furthermore, participants exhibited VCPs like accidental use of contralateral limbs or inability to coordinate movements. More instances of significant differences between baseline and stimulation occurred during stimulation of the right hemisphere compared to left-hemispheric stimulation. In conclusion, nTMS to the SMA could enable new approaches in neuroscience and enable structured mapping approaches. Specifically, this study supports interhemispheric differences in motor control as right-hemispheric stimulation resulted in clearer impairments. The application of our nTMS-based setup to assess the function of the SMA should be applied in patients with changed anatomo-functional representations as the next step, e.g. among patients with eloquent brain tumors.


Author(s):  
Anssam Bassem Mohy ◽  
Aqeel Kareem Hatem ◽  
Hussein Ghani Kadoori ◽  
Farqad Bader Hamdan

Abstract Background Transcranial magnetic stimulation (TMS) is a non-invasive procedure used in a small targeted region of the brain via electromagnetic induction and used diagnostically to measure the connection between the central nervous system (CNS) and skeletal muscle to evaluate the damage that occurs in MS. Objectives The study aims to investigate whether single-pulse TMS measures differ between patients with MS and healthy controls and to consider if these measures are associated with clinical disability. Patients and methods Single-pulse TMS was performed in 26 patients with MS who hand an Expanded Disability Status Scale (EDSS) score between 0 and 9.5 and in 26 normal subjects. Different TMS parameters from upper and lower limbs were investigated. Results TMS disclosed no difference in all MEP parameters between the right and left side of the upper and lower limbs in patients with MS and controls. In all patients, TMS parameters were different from the control group. Upper limb central motor conduction time (CMCT) was prolonged in MS patients with pyramidal signs. Upper and lower limb CMCT and CMCT-f wave (CMCT-f) were prolonged in patients with ataxia. Moreover, CMCT and CMCT-f were prolonged in MS patients with EDSS of 5–9.5 as compared to those with a score of 0–4.5. EDSS correlated with upper and lower limb cortical latency (CL), CMCT, and CMCT-f whereas motor evoked potential (MEP) amplitude not. Conclusion TMS yields objective data to evaluate clinical disability and its parameters correlated well with EDSS.


Author(s):  
Azza B. Hammad ◽  
Rasha E. Elsharkawy ◽  
Ghada S. Abdel Azim

Abstract Background Clinical applications of transcranial magnetic stimulation (TMS) have shown promising results in the treatment of headache disorders, with migraine being one of the most encountered. Objective To assess the role of low-frequency repetitive transcranial magnetic stimulation as a preventive treatment of migraine (with and without aura) and correlate the results with the serum level of the inflammatory biomarker (neurokinin A). Methods Forty patients, with age ranging from 15 to 55 years, diagnosed with migraine (30 migraine without aura and 10 with aura) and 20 apparently healthy individuals, who were age and sex matched with the patient group, were included in this study. A low-frequency (1 Hz) rTMS protocol was applied for all patients for five consecutive days interictally. Assessment of pain intensity using visual analogue scale and frequency and duration of attacks as well as number of pills taken by patients as an abortive treatment according to the Basic Diagnostic Headache Diary for 4 weeks before and 4 weeks after TMS sessions was done. In addition, the Migraine Disability Assessment scale (MIDAS) was applied to assess the severity and degree of disability caused by migraine. Measurement of neurokinin A serum level was done by using ELISA for all patients before and after TMS and for control group once. Results There was a significant reduction in pain intensity, frequency and duration of migraine attacks, migraine disability scores, and number of pills taken as abortive treatment for attacks after rTMS (P < 0.001). Also, serum level of neurokinin A in the patients was significantly reduced after rTMS (P < 0.001). Conclusion Low-frequency rTMS is an effective prophylactic treatment for migraine with and without aura.


2002 ◽  
Vol 16 (3) ◽  
pp. 275-282 ◽  
Author(s):  
Eric P. Bastings ◽  
Jason P. Greenberg ◽  
David C. Good

The respective contributions of the stroke and undamaged hemispheres to motor recovery after stroke remains controversial. The aim of this article is to evaluate the relationship between location and size of cortical motor areas and outcome after stroke. Twelve controls and 12 stroke patients were studied. Hand cortical motor output areas were determined using transcranial magnetic stimulation. Motor-evoked potentials were recorded simultaneously from both hands. Functional motor abilities were evaluated using well-validated measures. Surface area, weighted surface area, and center of gravity of motor output areas were calculated. Different patterns of motor output areas to the paretic hand were observed; there was no motor output from the stroke hemisphere in patients with poor outcome, contrasting to large motor output area in the stroke hemisphere in patients with good outcome, regardless of infarct size or location. A significant correlation was found between measures of motor outcome in the stroke-affected upper extremity and both the surface area and weight of the central motor output area in the stroke hemisphere. No ipsilateral motor response was obtained after stimulation of either hemisphere. These data support an association between preservation of cortical motor output area to the paretic hand in the stroke hemisphere and good motor outcome.


2021 ◽  
pp. 1-10
Author(s):  
Elsayed S. Mehrem ◽  
Lamyaa A. Fergany ◽  
Said A. Mohamed ◽  
Hany M. Fares ◽  
Roshdy M. Kamel

Background: Childhood hearing impairment is a major disability associated with delayed motor development. The affected Fine motor performance in children with sensorineural hearing loss (SNHL) could be due to dynamic balance deficits and visual-motor incoordination. Objective: This study was designed to investigate the effects of fine motor exercises with or without balancing exercises on fine motor skills in children with SNHL. Methods: One hundred and eighty (180) children their age ranged from 8 to 18 years old diagnosed with SNHL were selected. They were divided into three groups, 60 children (control group) practiced only their ordinary activities of daily living, 60 children (fine motor exercises group) practiced fine motor exercises, and 60 children (fine motor and balance exercise) group practiced fine motor and balance exercises. The outcomes were assessed by the Bruininks Oseretsky Test of the motor proficiency second edition scale (BOT-2). Results: Generally, there was a statistically significant difference between control group and fine motor exercises group where (p <  0.05), besides, there was a statistically significant difference between control group and fine motor and balance exercises group where (p <  0.05). But, there was no statistically significant difference between fine motor exercises group and fine motor and balance exercises group where (p >  0.05). Conclusions: The Fine Motor performance of children with SNHL has been improved by Fine motor with or without balancing exercises according to (BOT-2).


Author(s):  
Suryati Romauli

The Child development speed is unique; it varies due to the child’s nature and its stimulants. Lack of stimulants will affect late fine motoric development of children. Data from the Waena Health Center inform, 190 toddlers have impaired fine motor development. This research objective was to determine the effect of mosaic techniques on the enhancement of fine motor skills in children aged 3-4 years in Integrated Health Care Waena area, Jayapura City. A quantitative descriptive research was done with Two Group Pretest-Postest Group Design. The results before the mosaic technique showed in intervention group, had dubious fine motor skills (55.6%) and 16.6% deviant. Whereas in the control group had dubious fine motor skills (83.3%) and 5.6% deviant. After using mosaic technique the intervention group had fine motor skills (77.8%) and small part doubted (22.2%). The average score after improving fine motor skills in the intervention group was 8, while the control group was 7.1 with independent t-test statistical test at a significance value of 95% ( = 0.05) obtained p-value 0.042 or p <α (0.05), thus there is an effect of mosaic techniques on improving fine motor skills of children at the Integrated Health Care Waena area, Jayapura City. Keyword: Mozaik Technique, Fine motor skill, children age 3-4 tahun


Author(s):  
Alexey Е. Tereshin ◽  
Vera V. Kiryanova ◽  
Dmitry A. Reshetnik ◽  
Marina V. Karyagina ◽  
Elena K. Savelyeva ◽  
...  

The purpose of the investigation was to study the nootropic effects of rhythmic transcranial magnetic stimulation (rTMS) using low-intensity magnetic field with the induction rate of 45 mT, base frequency of 50 Hz, modulation frequency of 10 Hz in combination with standard medical and psychological therapy in the rehabilitation of patients with post-stroke cognitive impairment (PSCI). Materials and methods. The rehabilitation outcomes in 98 patients with PSCI syndrome were studied. The patients were subdivided into 2 groups: 53 patients of the control group were treated with the standard nootropic medications and neuropsychological procedures; 45 patients of the main group were additionally treated with rTMS by the low-intensive running pulsed magnetic field of 10 Hz modulation frequency. The dynamics of the score increase according to Rivermid, Karnovsky, Roshina, MMSE, mRS, HDRS, SF-36 scales were analyzed. Conclusion. Application of rTMS with low-intensive running pulsed magnetic field of 10 Hz modulation frequency in combination with a standard program of cognitive rehabilitation contributes to a significant improvement in the recovery of mental calculation function in ischemic stroke patients, as well as normalization in mood swings in the patients who had suffered a hemorrhagic stroke and post-stroke depression. This variant of rTMS can be safely used in patients with PSCI syndrome in the early recovery period, 3 weeks after the onset of stroke.


2018 ◽  
Vol 6 (3) ◽  
pp. 47
Author(s):  
Murat Taş ◽  
Elif Kiyici ◽  
Fatih Kiyici

The aim of this study was to investigate the effect of skiing on the biomotoric characteristics of children with evaluating tests of girls between the ages of eight and 14 before and after the season. The experimental group of this study was 15 girls who had just started skiing and the control group of 30 girls. In total, 45 volunteers joined the study. To follow the development of the children in the study, the Bruininks biomotoric-Oseretsky proficiency testing of engines, Second Edition Short Form (BOT 2 brief) test: Fine Motor Precision, Fine Motor Integration, Manual Dexterity, Bilateral Coordination, Balance, Running Speed and Agility, Upper-Limb Coordination, and Strength was used and total scores were measured. All measurements observed changes in the first test by applying the latest testing methods. The Windows SPSS 17.0 statistical package program was used to analyze the data with Independent-Sample t-test to find the differences between the groups. Statistically meaningful levels resulted as p< 0.05 and p< 0.001. No meaningful differences were found in the comparison of the motoric features of the girls who ski and those who do not in their pre-test. A meaningful difference was found in fine motor skills, fine motor accord and total score after ski training. Ski training contributed to the fine motor skills, fine motor accord and total score of the girls.


1995 ◽  
Vol 7 (3) ◽  
pp. 245-250 ◽  
Author(s):  
Leopold J. Streletz ◽  
Jacqueline K. S. Belevich ◽  
Seth M. Jones ◽  
Anju Bhushan ◽  
Suken H. Shah ◽  
...  

2020 ◽  
Vol 10 (2) ◽  
pp. 87
Author(s):  
Jae-Hong Kim ◽  
Jae-Young Han ◽  
Min-Keun Song ◽  
Gwang-Cheon Park ◽  
Jeong-Soon Lee

This study investigated the synergistic effects of scalp acupuncture (SA) and repetitive transcranial magnetic stimulation (rTMS), known to be effective for cerebral infarction. This outcome-assessor-blinded, randomized controlled clinical trial included a per-protocol analysis to compare the efficacy of SA and electromagnetic convergence stimulation (SAEM-CS) and single or no stimulation. The trial was conducted with 42 cerebral infarction patients (control group, 12; SA group, 11; rTMS group, 8; SAEM-CS group, 11). All patient groups underwent two sessions of CSRT per day. SA, rTMS, and SAEM-CS were conducted once per day, 5 days per week, for 3 weeks. The primary outcome was evaluated using the Fugl–Mayer assessment (FMA). FMA Upper Extremity, FMA total, MBI, and FIM scores significantly increased in the rTMS group compared with the control group. Additionally, FMA Upper Extremity, FMA total, MBI and FIM scores significantly increased in the rTMS group compared with the SAEM-CS group. However, there were no significant changes in the SA or SAEM-CS groups. In conclusion, low-frequency rTMS in the contralesional hemisphere may have long-term therapeutic effects on upper extremity motor function recovery and improvements in activities of daily living. SAEM-CS did not show positive synergistic effects of SA and rTMS.


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