Distortion Suppression in Neuromuscular Information Transmission Due to Interchannel Dispersion in Muscle Spindle Firing Thresholds
Distortion Suppression in Neuromuscular Information Transmission Due to Interchannel Dispersion in Muscle Spindle Firing Thresholds
复制标题
由于肌梭发射阈值的通道间色散而导致的神经肌肉信息传输中的失真抑制
DOI：
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发表时间：
1976
影响因子：
4.6
通讯作者：
G. Inbar
中科院分区：
文献类型：
--
作者：
P. Milgram;G. Inbar
一个数学多路径模型的信息流内的传入肢体的肌牵张反射的审查和评估，重点放在其多通道结构。该系统进行了模拟，并得到的输出（α运动神经元跨膜电位）进行了频谱分析，与一个单音输入（肌肉拉伸）和一组不同的系统参数的变化：（i）当所有的通道是相同的，输入信号的特性是无法识别的输出，只能提取的“非生理”的运动神经元。(ii)当传入传导延迟分布在通道之间时，输出也会发生类似的失真，并且只能通过假设非典型的长传导路径来改善。（iii）当肌梭放电阈值在通道之间变化或在每个通道内随时间变化时，失真会显着减少，输入信号很容易恢复。
A mathematical multipath model of the flow of information within the afferent limb of the myotatic stretch reflex is reviewed and evaluated, with emphasis being placed on its multi-channel structure. The system is simulated, and the resultant output (alpha motoneuron transmembrane potential) is analyzed spectrally, with one single-tone input (muscle stretch) and a set of variations of different system parameters: (i) When all the channels are identical, the characteristics of the input signal are unrecognizable at the output, and can only be extracted by an ``unphysiological'' motoneuron. (ii) When the afferent conduction delays are distributed among the channels, the output is similarly distorted, and can only be improved by assuming an atypically long conduction path. (iii) When the muscle spindle firing thresholds are either varied among the channels or vary temporally within each channel, the distortion is dramatically reduced and the input signal is easily recoverable.