RELATIONS OF HUMAN VERTEX POTENTIAL TO ACOUSTIC INPUT - LOUDNESS AND MASKING
RELATIONS OF HUMAN VERTEX POTENTIAL TO ACOUSTIC INPUT - LOUDNESS AND MASKING
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DOI：
10.1121/1.1910849
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发表时间：
1968-01-01
影响因子：
2.4
通讯作者：
HIRSH, SK
中科院分区：
文献类型：
--
作者：
DAVIS, H;BOWERS, C;HIRSH, SK
V（顶点）电位的振幅随短纯音声压级的增加而增加的速率是非常缓慢的。在一个实验中，幂律的指数为0。15在250赫兹，0。1000 Hz时为11，只有0。08在4000赫兹。受试者之间的个体差异似乎比刺激之间的间隔更重要（1秒vs 3秒）。2秒），试验间的变异性往往掩盖了与强度的关系。在存在适当的掩蔽噪声频带的情况下，输入-输出曲线从掩蔽阈值突然上升，以在高于相应掩蔽阈值约30 dB的水平处接近未掩蔽幅度。这种效应类似于响度的恢复。相同音量的不同频率的短音和短纯音诱发的慢V电位振幅大致相等。然而，在一些受试者中，白色噪音的爆发比同等大声的音调爆发或尖声引起了明显更大的反应。尽管它们之间的部分相似性，V电位的幅度和响度的感觉是不同的声学刺激的参数。
The rate of increase of amplitude of V (vertex) potentials with the SPL [sound pressure level] of tone bursts is very slow. In one experiment, the exponent of the power law was 0. 15 at 250 Hz, 0. 11 at 1000 Hz, and only 0. 08 at 4000 Hz. Individual differences across subjects seemed more important than the interval between stimuli (1 sec vs 3. 2 sec), and variability across trials often obscured the relation to intensity. In the presence of appropriate bands of masking noise, the input-output curves rise abruptly from the masked threshold to approach the unmasked amplitude at a level about 30 dB above the corresponding masked threshold. The effect resembles recruitment of loudness. Tone pips and tone bursts of different frequency that were judged equally loud evoked slow V potentials of approximately equal amplitude. In some subjects, however, bursts of white noise evoked significantly larger responses than equally loud tone bursts or pips. In spite of the partial similarities between them, the amplitude of the V potential and the sensation of loudness are related differently to the parameters of the acoustic stimulus.