A unified approach toward understanding the surface electromyographic signal

理解表面肌电信号的统一方法

• 批准号: 227790-2010
• 负责人: Gabriel, David
• 金额: $ 1.97万
• 依托单位: Brock University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=478612
• 关键词: unified; approach; toward; understanding; surface

A whole muscle may contain several hundreds of thousands of individual muscle fibers. These fibers are grouped into functional units (10 - 1000 fibers) activated by a single motor neuron. A single motor neuron and all the muscle fibers that it activates is a call a motor unit (MU). The MU is the basic building block of force production. Force can be increased by recruiting additional MUs, or by increasing the number of times per second (frequency) that each MU is activated. Activating MUs more frequently allows the forces generated by the MUs to overlap in time to a greater degree and sum up more efficiently. Similarly, the nervous system can also recruit groups of MUs more synchronously so that there is a near perfect summation of forces.

整个肌肉可能包含数十万个单独的肌纤维。 这些纤维被分组为由单个运动神经元激活的功能单元（10 - 1000个纤维）。 单个运动神经元和它激活的所有肌肉纤维被称为运动单位（MU）。 MU是部队生产的基本组成部分。 可以通过招募额外的MU或通过增加每个MU每秒激活的次数（频率）来增加力。 更频繁地激活MU允许由MU产生的力在时间上更大程度地重叠并且更有效地相加。 类似地，神经系统也可以更同步地招募MU组，以便有一个近乎完美的力的总和。