Joly Olivier, Baumann Simon, Poirier Colline, Patterson Roy D, Thiele Alexander, Griffiths Timothy D
Auditory Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne UK ; Department of Experimental Psychology, MRC Cognition and Brain Sciences Unit, University of Oxford Oxford, UK.
Auditory Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne UK.
Front Psychol. 2014 Sep 15;5:998. doi: 10.3389/fpsyg.2014.00998. eCollection 2014.
Pitch is an auditory percept critical to the perception of music and speech, and for these harmonic sounds, pitch is closely related to the repetition rate of the acoustic wave. This paper reports a test of the assumption that non-human primates and especially rhesus monkeys perceive the pitch of these harmonic sounds much as humans do. A new procedure was developed to train macaques to discriminate the pitch of harmonic sounds and thereby demonstrate that the lower limit for pitch perception in macaques is close to 30 Hz, as it is in humans. Moreover, when the phases of successive harmonics are alternated to cause a pseudo-doubling of the repetition rate, the lower pitch boundary in macaques decreases substantially, as it does in humans. The results suggest that both species use neural firing times to discriminate pitch, at least for sounds with relatively low repetition rates.
音高是一种听觉感知，对音乐和语音的感知至关重要。对于这些谐波声音，音高与声波的重复率密切相关。本文报告了一项关于非人类灵长类动物，尤其是恒河猴，是否与人类一样感知这些谐波声音音高的假设测试。开发了一种新程序来训练猕猴辨别谐波声音的音高，从而证明猕猴音高感知的下限与人类一样接近30赫兹。此外，当连续谐波的相位交替以导致重复率伪加倍时，猕猴的低音高边界会大幅下降，就像人类一样。结果表明，至少对于重复率相对较低的声音，这两个物种都利用神经放电时间来辨别音高。
