Hill N I, Darwin C J
Laboratory of Experimental Psychology, University of Sussex, Brighton, UK.
J Acoust Soc Am. 1996 Oct;100(4 Pt 1):2352-64. doi: 10.1121/1.417945.
The lateralization paradigm of Trahiotis and Stern [C. Trahiotis and R. M. Sern, J. Acoust. Soc. Am. 86, 1285-1293 (1989)] was extended to investigate the influence of a spectrally flanking complex on the lateral position of a perturbed harmonic. When a complex tone consisting of harmonics 2 through 8 or 100 Hz was presented with an interaural time difference (ITD) of 1.5 ms, the complex was heard on the leading side (experiment 1). However, when the 500-Hz component had a later onset time than the other components (experiments 1 and 2) or was mistuned (experiment 3), it was perceived to be in a different lateral position to the complex. The complex still maintained a residual influence on the lateralization of the pure tone even for the largest asynchrony used (experiment 4). Experiment 5 confirmed that the lateralizaiton of the tonal complex was consistent with the aggregation of binaural information across frequency. The results suggest that across-frequency integration of interaural-timing information is influenced by onset-asynchrony and harmonicity.
特拉希奥蒂斯和斯特恩[C.特拉希奥蒂斯和R.M.斯特恩，《美国声学学会杂志》86, 1285 - 1293(1989)]的侧向化范式被扩展，以研究频谱侧翼复合体对受扰谐波侧向位置的影响。当由2至8次谐波或100赫兹组成的复合音以1.5毫秒的耳间时间差(ITD)呈现时，复合音在前导侧被听到(实验1)。然而，当500赫兹的成分比其他成分有更晚的起始时间(实验1和2)或失谐(实验3)时，它被感知到与复合体处于不同的侧向位置。即使对于所使用的最大异步情况，复合体对纯音的侧向化仍保持残余影响(实验4)。实验5证实，音调复合体的侧向化与跨频率双耳信息的聚集一致。结果表明，耳间时间信息的跨频率整合受起始异步性和谐波性的影响。
