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电刺激真的能让人跑得更快更远吗? - 赢富仪器-上海心理人因|生物力学|驾驶行为研究设备一站式解决方案提供者
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电刺激真的能让人跑得更快更远吗?

经颅电刺激系统

在COMPLEX上曾有报道NBA勇士队在使用经颅直流电刺激(tDCS)耳机来提高运动员的力量、爆发力和灵活性。Nature于2016年和2017年连续刊文报道:tDCS可使运动员产生更优越的运动表现,并将其称之为“神经启动”技术。身处硅谷高科技围绕的勇士队先后尝试多种先进仪器,用来记录球员加速度、心率等等指标以科技助力运动表现。这股体育科技风潮也已经席卷NBA联盟甚至整个体育界。

经颅电刺激系统

经颅直流电刺激(tDCS)是一种常用的脑刺激方法,用于调节皮层兴奋性,对多种行为产生促进或抑制作用。人类认知过程的增强长期以来是科学实验的焦点,tDCS最近成为能调节认知和运动技能并有希望直接作用于神经系统并调节大脑皮层兴奋性的工具。

 

有文献提到tDCS作为辅助手段联合传统训练,增加肌肉激活程度,从而改善运动表现。[1]此种能够同时针对中枢神经系统、肌骨运动系统的脑刺激联合训练的干预模式,有望在竞技体育、运动康复等领域发挥比传统运动训练更优的效果。[2]

tDCS刺激训练为各种认知,运动,社交和情感领域建立大脑-行为关系提供了有价值的工具,并且在健康人群中,已经显示出暂时改变行为,加速学习和提高任务表现,这就是常说的跑得更快更远。[3]有的运动员在使用“神经启动”的训练辅助装置训练后, 原地弹跳高度提高了18 cm。tDCS增强运动员竞技能力的有效性也引发了不少人将这种技术称为“神经兴奋剂 ”或“大脑兴奋剂”。[4]

 

如何使用经颅直流电刺激tDCS呢

首先,需要确定电极放置的理想位置。在将电极连接到头皮上之前,实验者应确保没有破损的皮肤。若使用生理盐水作为导电物质,电极应充分湿润但不滴水,或使用导电膏或脑电图凝胶将电极固定在头皮上。参与者的头发应分开,以确保头皮和电极之间的良好接触。然后,使用连接到相应的阳极、阴极端口的导线将电极连接到刺激器上。一旦电极被放置在目标区域,它应该用帽子、橡皮筋或弹性管网固定。放置电极应首先考虑影响其位置对任务的影响因素、当前流向、参与者舒适度和安全性。

很多研究人员想在电刺激的过程中了解大脑神经的活动和实时变化,脑电技术虽然能很好表征大脑的活动,但是由于刺激过程中主动电信号严重干扰EEG信脑电号的采集,在这个场景下,fNIRS近红外脑成像的技术特点就显得非常的契合,因为fNIRS采用的近红外光谱成像的原理,所以信号质量几乎不受电刺激信号影响,可以在进行电刺激的同时也采集大脑的活动。关于刺激时间和强度,可以做出复制与模拟实验相同的刺激目标区域的方案,逐渐形成某些行为的相对通用的实验参数。一般来说,大多数刺激持续时间在5到30分钟之间,电流强度在1到2毫安之间。

经颅电刺激近红外套装TDCS-FNIRS

西班牙tES制造商NE公司与和荷兰fNIRS近红外脑成像设备供应商Artinis合作,将Starstim经颅电刺激仪与OctaMon/Brite近红外脑成像设备整合、同步,让研究人员能够轻松实现自己的研究意图,在进行经颅电刺激时同步采集大脑活数据。

其中Starstim32是可穿戴式的32通道经颅刺激仪,通过无线WIFI方式记录数据传输,主机和电极都支持电刺激仿真(tDCS/tACS/tRNS)或EEG记录。兼具高分辨率tCS,并同步记录EEG。每个通道都可以单独设置来进行tCS或者EEG记录。同步多通道刺激方案,满足您特殊多样的使用需求。超低的延迟率,在采集EEG的同时也可以进行闭环的刺激仿真。

 

如需获取相关解决方案,欢迎致电4006-111-556详询!

参考文献

 

[1]Nitsche, MA 和 Paulus, W. (2000)。弱经颅直流电刺激在人体运动皮层中引起的兴奋性变化。J.生理学。527(第 3 部分),633–639。

[2]王宝峰,肖松林,傅维杰.“神经启动”增能技术:经颅直流电刺激联合运动干预的协同效果[J].上海体育学院学报,2021,45(10):53.

[3]Coffman, BA、Clark, VP 和 Parasuraman, R. (2014)。电池供电的想法:使用经颅直流电刺激增强健康成年人的注意力、学习和记忆力。NeuroImage 85(第 3 部分),895–908。

[4]王开元,刘宇.“神经启动”技术增强运动表现[J].体育科学,2018,38(01):96-97.


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