Bones Oliver, Plack Christopher J
School of Psychological Sciences, University of Manchester, Manchester M13 9PL, UK.
School of Psychological Sciences, University of Manchester, Manchester M13 9PL, UK.
Hear Res. 2015 May;323:9-21. doi: 10.1016/j.heares.2015.01.009. Epub 2015 Jan 28.
When two notes are played simultaneously they form a musical dyad. The sensation of pleasantness, or "consonance", of a dyad is likely driven by the harmonic relation of the frequency components of the combined spectrum of the two notes. Previous work has demonstrated a relation between individual preference for consonant over dissonant dyads, and the strength of neural temporal coding of the harmonicity of consonant relative to dissonant dyads as measured using the electrophysiological "frequency-following response" (FFR). However, this work also demonstrated that both these variables correlate strongly with musical experience. The current study was designed to determine whether the relation between consonance preference and neural temporal coding is maintained when controlling for musical experience. The results demonstrate that strength of neural coding of harmonicity is predictive of individual preference for consonance even for non-musicians. An additional purpose of the current study was to assess the cochlear generation site of the FFR to low-frequency dyads. By comparing the reduction in FFR strength when high-pass masking noise was added to the output of a model of the auditory periphery, the results provide evidence for the FFR to low-frequency dyads resulting in part from basal cochlear generators.
当两个音符同时奏响时，它们构成一个音乐二元组。二元组的愉悦感，即“协和性”，可能由两个音符组合频谱中频率成分的和声关系驱动。先前的研究表明，个体对协和二元组相对于不协和二元组的偏好，与使用电生理“频率跟随反应”（FFR）测量的协和二元组相对于不协和二元组和声性的神经时间编码强度之间存在关联。然而，这项研究也表明，这两个变量都与音乐经验密切相关。本研究旨在确定在控制音乐经验的情况下，协和性偏好与神经时间编码之间的关系是否依然存在。结果表明，即使对于非音乐家，和声性的神经编码强度也能预测个体对协和性的偏好。本研究的另一个目的是评估FFR对低频二元组的耳蜗产生部位。通过比较在听觉外周模型的输出中添加高通掩蔽噪声时FFR强度的降低情况，结果为FFR对低频二元组部分源自耳蜗基底发生器提供了证据。
