Green S
J Exp Anal Behav. 1975 Mar;23(2):255-64. doi: 10.1901/jeab.1975.23-255.
The effects of the type of reinforcer on auditory sensitivity and equal-loudness data were determined in the squirrel monkey. The monkeys, restrained and provided with earphones, were conditioned to depress and hold a bar down in the presence of a stimulus light and then to terminate the holding response after onset of a tone. In Experiment 1, the specified behavior sequence postponed electric shock; in Experiment 2, a food reinforcer was dependent on bar release during the tone. The shape of the auditory sensitivity function and the acuity level at each frequency were the same for the two procedures. The audible frequency range extended from below 0.125 kHz (lowest frequency used) to 46 kHz. Sensitivity was maximum at 8 kHz. Latency of bar release following tone onset served as the basic data for constructing a family of equal-loudness contours. The type of reinforcer appeared not to be a determinant of either the shape of individual loudness contours or the pattern of family of equal-loudness functions. At the lower sound-pressure levels, the equal-loudness contours closely paralleled the threshold curves. At more-intense levels, the contours tended to flatten and depend less on frequency.
在松鼠猴身上确定了强化物类型对听觉敏感度和等响度数据的影响。这些猴子被限制行动并佩戴耳机，在刺激光出现时被训练按下并按住一根杠杆，并在音调开始后终止按住反应。在实验1中，特定的行为序列可避免电击；在实验2中，食物强化物取决于音调期间杠杆的松开。两种程序的听觉敏感度函数形状和每个频率的敏锐度水平相同。可听频率范围从低于0.125千赫兹（使用的最低频率）延伸至46千赫兹。敏感度在8千赫兹时最高。音调开始后杠杆松开的潜伏期用作构建一系列等响度轮廓的基础数据。强化物类型似乎既不是单个响度轮廓形状的决定因素，也不是等响度函数系列模式的决定因素。在较低声压水平下，等响度轮廓与阈值曲线紧密平行。在较高强度水平下，轮廓趋于平坦，对频率的依赖性降低。
