HUMAN ABILITY TO DISCRIMINATE VARIOUS PARAMETERS IN AFFERENT ELECTRICAL NERVE-STIMULATION WITH PARTICULAR REFERENCE TO PROSTHESES SENSORY FEEDBACK
HUMAN ABILITY TO DISCRIMINATE VARIOUS PARAMETERS IN AFFERENT ELECTRICAL NERVE-STIMULATION WITH PARTICULAR REFERENCE TO PROSTHESES SENSORY FEEDBACK
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DOI：
10.1007/bf02457988
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发表时间：
1977-01-01
影响因子：
3.2
通讯作者：
KORNER, LM
中科院分区：
文献类型：
--
作者：
ANANI, AB;IKEDA, K;KORNER, LM
传入电神经刺激耐受性良好，可以传输相当高的信息量，并具有几个特点，使其上级电皮肤和振动触觉装置时，应用于假体。反馈信息通过电流脉冲幅度（A.M.）或通过电流脉冲频率（F.M.）。应用A.M.刺激时，应使感觉异常的分布随电流变化而发生特征性变化。以这种方式使用，它不依赖于电极位置的微小变化，易于学习，即使在未经培训的受试者中也能提供高信息率[Ss]。每个神经中可以使用的通道数量是有限的，因为需要大量的轴突来实现空间扩展。F.M.刺激比AM更难学习，但当用于受过训练的个体时，信息传递的速率相同。与AM一样，它不依赖于电极位置的微小变化，但需要较少数量的轴突来实现区分。在每个神经中可以使用几个通道。与A. M.和F. M.训练后的S在激励下可分辨5 ~ 6个离散电平，正确识别率> 75%，传输信息量约为1.8比特/码元。
Afferent electrical nerve stimulation is well tolerated, can transmit fairly high amounts of information and has several characteristics making it superior to electrocutaneous and vibrotactile devices when applied to prostheses. The feedback information is transferred in modulated form by means of the current pulse amplitude (A.M.) or by the current pulse frequency (F.M.). A.M. stimulation should be applied in such a way that it gives rise to characteristic changes in the distribution of paresthesias with chaning current. Used in this way it is not dependent upon minor changes in electrode position, it is easy to learn and gives high rates of information, even in untrained subjects [Ss]. The number of channels that can be used in each nerve is limited because of the large amount of axons necessary to achieve the spatial spread. F.M. stimulation is more difficult to learn than A.M. but gives the same rate of information transfer when used in trained individuals. Like A.M. it is not dependent upon minor changes in electrode position, but a smaller number of axons is needed to achieve discrimination. Several channels can be used in each nerve. With A.M. and F.M. stimulation a trained S can discriminate 5 or 6 discrete levels with a rate of correct recognition of > 75%, the amount of transmitted information being about 1.8 bits/symbol.