Vibrotactile forward masking: Effects of the amplitude and duration of the masking stimulus
Vibrotactile forward masking: Effects of the amplitude and duration of the masking stimulus
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DOI：
10.1121/1.413808
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发表时间：
1995-12-01
影响因子：
2.4
通讯作者：
Bolanowski, SJ
中科院分区：
文献类型：
--
作者：
Gescheider, GA;Santoro, KE;Bolanowski, SJ
触觉阈值检测一个50毫秒的信号提出25毫秒后终止的掩蔽刺激增加的掩蔽刺激的振幅水平和持续时间的函数。分别在250和20 Hz下测量的P和NP I通道中的效果相似。得出的结论是，增加掩蔽刺激的持续时间引起的掩蔽增加是由时间整合以外的过程或除了时间整合之外的过程引起的--后者是P通道的特征，而不是NP I通道的特征。掩蔽函数的斜率？其中阈值偏移被绘制为掩蔽刺激感觉水平的函数，对于20-Hz的刺激始终大于对于250-Hz的刺激，这表明在NP I通道中掩蔽效率大于在P通道中。(C)1995年美国声学学会。
Tactile thresholds for detecting a 50-ms signal presented 25 ms after the termination of a masking stimulus increased as a function of the amplitude level and duration of the masking stimulus. The effects were similar in both the P and NP I channels measured at 250 and 20 Hz, respectively. It was concluded that the increased masking caused by increasing the duration of the masking stimulus resulted from processes other than or in addition to temporal integration-the latter being a characteristic of the P,but not the NP I, channel. The slopes of the masking functions? in which threshold shifts were plotted as a function of masking-stimulus sensation level, were consistently greater for 20-Hz than for the 250-Hz stimuli, suggesting that masking efficiency is greater in the NP I than in the P channel. (C) 1995 Acoustical Society of America.