Zoloth S R, Petersen M R, Beecher M D, Green S, Marler P, Moody D B, Stebbins W
Science. 1979 May 25;204(4395):870-3. doi: 10.1126/science.108805.
Monkeys of four species were trained to discriminate between sets of natural tonal calls of Japanese macaques (Macaca fuscata) by the position of a frequency-inflection peak or by initial pitch. The Japanese macaques consistently performed best on peak position and the other species on pitch. The results imply special strategies for perceptional processing of vocal sounds and suggest parallels with human speech perception.
四种猴子被训练通过频率转折峰值的位置或初始音高来区分日本猕猴（Macaca fuscata）的自然音调叫声集合。日本猕猴在峰值位置的辨别上始终表现最佳，而其他物种则在音高辨别上表现最佳。这些结果暗示了对声音进行感知处理的特殊策略，并表明与人类语音感知存在相似之处。
