THRESHOLD AND LOUDNESS FUNCTIONS FOR PULSATILE STIMULATION OF COCHLEAR IMPLANTS
THRESHOLD AND LOUDNESS FUNCTIONS FOR PULSATILE STIMULATION OF COCHLEAR IMPLANTS
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DOI：
10.1016/0378-5955(85)90005-x
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发表时间：
1985-01-01
期刊：
影响因子：
2.8
通讯作者：
SHANNON, RV
中科院分区：
文献类型：
--
作者：
SHANNON, RV
测量听神经双相脉冲式电刺激的阈值和响度。测量被收集为参数的函数：脉搏持续时间和脉搏频率。结果表明，阈值和响度的感觉是由刺激电流波形的复函数决定的。对于相同电荷的刺激，在脉冲持续时间最短时响度最大，在脉冲持续时间2-3ms/相时出现次大响度。响度函数中的第二个峰和长脉冲响度略高于阈值的缓慢增长可能是电极附近树枝晶存活的迹象。如果这一解释是有效的，这些措施可能会导致周围神经生存能力的感知测试。此外，语音处理器设备可以使用这些措施来均衡具有不同脉冲持续时间和脉冲速率的刺激的响度。
Thresholds and loudness estimates were measured for biphasic pulsatile electrical stimulation of the auditory nerve. Measures were collected as a function of the paremeters: pulse duration, and pulse rate. The results indicate that the sensations of threshold and loudness are determined by a complex function of the stimulating current waveform. For stimuli with the same charge, maximum loudness is seen at the shortest pulse durations, and a secondary maximum is seen at pulse durations of 2-3 ms/phase. It is possible that the secondary peak in the loudness function and the slow growth of loudness just above threshold for long pulses are indications of dendrite survival near the electrode. If this interpretation is valid, these measures could lead to perceptual tests of peripheral nerve viability. In addition, a speech processor device could use these measures to equalize the loudness of stimuli with different pulse durations and pulse rates.