DETECTION THRESHOLD MICROSTRUCTURE AND ITS EFFECT ON TEMPORAL INTEGRATION DATA
DETECTION THRESHOLD MICROSTRUCTURE AND ITS EFFECT ON TEMPORAL INTEGRATION DATA
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DOI：
10.1121/1.387442
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发表时间：
1982-01-01
影响因子：
2.4
通讯作者：
COHEN, MF
中科院分区：
文献类型：
--
作者：
COHEN, MF
使用自适应2 IFC [2间隔强制选择]程序在几个预选频率下测量听觉检测阈值[人]。结果证实存在的变化范围从2-14分贝的检测阈值相当小的变化信号频率。似乎没有与检测阈值曲线的微观结构相关的均匀图案。进行附加实验以确定信号持续时间对检测阈值微结构的影响。时间积分函数对于更敏感的频率（3.7 dB/加倍持续时间）似乎比对于不太敏感的频率（1.7 dB/加倍）更陡峭。这可能不是由于处理中的差异，而是由于与减小信号持续时间相关联的能量扩展的影响。
Auditory detection thresholds [human] were measured at several preselected frequencies using an adaptive 2IFC [2 interval forced choice] procedure. Results confirm the existence of shifts in detection threshold ranging from 2-14 dB with quite small changes in signal frequency. There does not appear to be a uniform pattern associated with the microstructure of the detection threshold curve. An additional experiment was performed to determine the effect of signal duration on detection threshold microstructure. The temporal integration function seems considerably steeper for more sensitive frequencies (3.7 dB/doubling of duration), than for less sensitive frequencies (1.7 dB/doubling). This is probably not due to differences in processing as much as it is to the effect of the energy spread associated with decreasing signal duration.