Effects of forward masking on sound localization in cats: basic findings with broadband maskers.
Effects of forward masking on sound localization in cats: basic findings with broadband maskers.
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前向掩蔽对猫声音定位的影响：宽带掩蔽器的基本发现。
DOI：
10.1152/jn.00255.2013
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发表时间：
2013
影响因子：
2.5
通讯作者：
Yin,TomCT
中科院分区：
文献类型：
--
作者：
Gai,Yan;Ruhland,JanetL;Yin,TomCT
前向掩蔽传统上是通过检测任务来测量的，在该检测任务中，添加先前的掩蔽声音会导致信号检测阈值的增加。关于前掩蔽对人类或动物受试者自由场声场局部化的影响，人们知之甚少。在这里，我们使用搜索线圈技术记录了两只头不受约束的猫在定位过程中的凝视移动。一个宽带(BB)噪声掩蔽器直接出现在前面。一个简短的信号可能来自前半部17个扬声器位置中的一个。信号要么是BB噪声，要么是带限(BL)噪声。对于BB目标，前向掩码的存在降低了水平和垂直方向上几乎所有目标水平(20到80dBSPL)的定位精度。当掩蔽器的末端和目标的开始之间增加15ms的刺激间隔时，可以观察到掩蔽的时间衰减。对于低频(0.2-2 kHz)和中频(2-7 kHz)的目标，前向掩蔽效应也很大，这表明耳间时序提示对前向掩蔽很敏感。除低声级外，对高频(7-15 kHz)目标观察到的影响很小或很小，表明耳间水平和该频率范围内的光谱线索保持相对强健。我们的发现表明，在复杂的听力环境中，不同的本地化机制可以独立运作。
Forward masking is traditionally measured with a detection task in which the addition of a preceding masking sound results in an increased signal-detection threshold. Little is known about the influence of forward masking on localization of free-field sound for human or animal subjects. Here we recorded gaze shifts of two head-unrestrained cats during localization using a search-coil technique. A broadband (BB) noise masker was presented straight ahead. A brief signal could come from 1 of the 17 speaker locations in the frontal hemifield. The signal was either a BB or a band-limited (BL) noise. For BB targets, the presence of the forward masker reduced localization accuracy at almost all target levels (20 to 80 dB SPL) along both horizontal and vertical dimensions. Temporal decay of masking was observed when a 15-ms interstimulus gap was added between the end of the masker and the beginning of the target. A large effect of forward masking was also observed for BL targets with low (0.2–2 kHz) and mid (2–7 kHz) frequencies, indicating that the interaural timing cue is susceptible to forward masking. Except at low sound levels, a small or little effect was observed for high-frequency (7–15 kHz) targets, indicating that the interaural level and the spectral cues in that frequency range remained relatively robust. Our findings suggest that different localization mechanisms can operate independently in a complex listening environment.
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影响因子：
2.8
作者：
Jordan M. Moore;D. Tollin;T. Yin
通讯作者：
Jordan M. Moore;D. Tollin;T. Yin
DOI：
10.1121/1.1911698
发表时间：
1969-08
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
B. H. Deatherage;T. R. Evans
通讯作者：
B. H. Deatherage;T. R. Evans
频率和时间分辨率随年龄的下降及其对语音识别的影响。
DOI：
10.3109/00016489109127265
发表时间：
1990
期刊：
Acta oto-laryngologica. Supplementum
影响因子：
--
作者：
M. Lutman
通讯作者：
M. Lutman
音调双重刺激诱导仓鸮（Tyto alba）听觉中脑的适应
影响因子：
3.4
作者：
Singheiser M;Ferger R;v. Campenhausen M;Wagner H
通讯作者：
Wagner H
猫头部和耳廓声压变换的产后发育：单耳特征。
DOI：
10.1121/1.3058630
发表时间：
2009
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Tollin,DanielJ;Koka,Kanthaiah
通讯作者：
Koka,Kanthaiah