Manual Dexterity Modifications After Application of tSMS Over the Primary Motor Cortex (M1)
Hand Grip Strength and Manual Dexterity Modifications After Application of Transcranial Static Magnetic Field Stimulation (tSMS) Over the Primary Motor Cortex (M1) in Healthy Subjects
Transcranial static magnetic field stimulation (tSMS) is a novel brain stimulation technique that has been shown to be safe and effective in modifying biological parameters when applied to the cerebral cortex. Its application decreases cortical excitability, regardless of the polarity of the magnetic field, reducing the amplitude of motor evoked potentials (MEP). tSMS is presented as a potentially useful tool in the management of the interhemispheric inhibition, a condition present in neurological pathologies such as stroke or multiple sclerosis. Despite having demonstrated neurophysiological effects in previous studies, the effects of tSMS application on force production and manual dexterity, have not yet been clearly established.
The present study aims to evaluate changes in force production, manual dexterity, and fatigue after unilateral application of a tSMS session on the primary motor cortex (M1). It is hypothesized that the application of tSMS will momentarily decrease the parameters of strength and manual dexterity in the upper limb contralateral to the stimulated cortex, without changes in the strength and dexterity of the unstimulated hemibody. These parameters may show an increase in the unstimulated hemibody. If the hypothesis is confirmed, it could be considered a valid treatment for health conditions presenting interhemispheric inhibition.
調査の概要
研究の種類
入学 (予想される)
段階
- 適用できない
連絡先と場所
研究場所
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Madrid
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Alcorcón、Madrid、スペイン、28922
- 募集
- Universidad Rey Juan Carlos
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コンタクト：
- Francisco Molina-Rueda, PhD
- 電話番号：+034 661614359
- メール：francisco.molina@urjc.es
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Age between 18 and 60 years.
- Absence of cognitive impairment.
- Adequate understanding of verbal and written information, sufficient to complete the tests.
Exclusion Criteria:
- Presence of metallic implants (e.g., neurostimulator, pacemaker, cochlear implant, or metallic elements in the head or around the eyes).
- Diagnosis of epilepsy or being under treatment with antiepileptic drugs.
- Diagnosis of unstable cardiovascular disease.
- Diagnosis of any disease or condition that may interfere with this study.
- Use of drugs that may influence with neuromuscular function (muscle relaxants or some analgesics...).
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：ヘルスサービス研究
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：4倍
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：tSMS
Real tSMS stimulation.
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30-minute tSMS application in a comfortable seated position.
The material used in the stimulation was a MAGxx1.1 helmet (Neurek Spain Toledo), with a Neodymium (NdFeB) magnet of 60mm diameter and 30mm height with Nickel (Ni-Cu-Ni) coating MAG60r+ (Neurek Spain, Toledo), placed over the primary motor cortex (M1) of the left cerebral hemisphere.
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偽コンパレータ：Sham tSMS
Sham tSMS stimulation.
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30-minute sham tSMS application in a comfortable seated position.
The device used in sham stimulation had the same weight and shape as the real stimulation helmet.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Finger Tapping Test (FTT)
時間枠：5 minutes
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was performed for assessment of manual motor skills.
This test has been used for many years in the neuropsychological assessment of brain damage, being an indicator of cortical activity, as well as being used in NIBS studies as a measure of manual dexterity.
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5 minutes
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Nine-Hole Peg Test (9HPT)
時間枠：5 minutes
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Was used to assess finger dexterity; this tool has been used in the assessment of motor activity in a multitude of pathologies, with adequate to excellent inter-rater reliability and excellent inter-rater reliability in healthy adults.
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5 minutes
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Hand grip strength
時間枠：5 minutes
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Upper extremity force production was assessed by grip testing; a hand-held dynamometer (Jamar Plus+; Sammons Preston, Rolyon, Bolingbrook, IL) was used for this purpose.
Greater hand grip strength corresponds with greater activation in M1, premotor area (PMA), and supplementary motor area (SMA) in the dominant hemisphere, and of the SMA in the nondominant hemisphere, and may provide information about the functionality of the human brain.
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5 minutes
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (予想される)
研究の完了 (予想される)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
追加の関連 MeSH 用語
その他の研究ID番号
- URJCtSMS100222
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
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米国で製造され、米国から輸出された製品。
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